- 
                
                
            
- 
                
                
            
- 
                
                
            
- 
                
                
            
- 
                
                
                    
                        Center sill gondola car
                                - 
                                    Patent number 4,408,542
                                
- 
                                    Issue date Oct 11, 1983
                                
 
                                - 
                                         Thrall Car Manufacturing Company Thrall Car Manufacturing Company
- 
                                         James C. Heap James C. Heap
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
            
- 
                
                
            
- 
                
                
                    
                        Pivoting back one-spot coke car
                                - 
                                    Patent number 4,366,029
                                
- 
                                    Issue date Dec 28, 1982
                                
 
                                - 
                                         Koppers Company, Inc. Koppers Company, Inc.
- 
                                         Robert P. Bixby Robert P. Bixby
 
                                - 
                                         C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON... C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
 
 
- 
                
                
                    
                        Rail car door linkage
                                - 
                                    Patent number 4,266,486
                                
- 
                                    Issue date May 12, 1981
                                
 
                                - 
                                         The Maxson Corporation The Maxson Corporation
- 
                                         Douglas A. Puariea Douglas A. Puariea
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        Side dumping railroad car
                                - 
                                    Patent number 4,240,355
                                
- 
                                    Issue date Dec 23, 1980
                                
 
                                - 
                                         The Maxson Corporation The Maxson Corporation
- 
                                         Douglas A. Puariea Douglas A. Puariea
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3841234
                                - 
                                    Patent number 3,841,234
                                
- 
                                    Issue date Oct 15, 1974
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3807317
                                - 
                                    Patent number 3,807,317
                                
- 
                                    Issue date Apr 30, 1974
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3776144
                                - 
                                    Patent number 3,776,144
                                
- 
                                    Issue date Dec 4, 1973
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3669029
                                - 
                                    Patent number 3,669,029
                                
- 
                                    Issue date Jun 13, 1972
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3596610
                                - 
                                    Patent number 3,596,610
                                
- 
                                    Issue date Aug 3, 1971
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3396859
                                - 
                                    Patent number 3,396,859
                                
- 
                                    Issue date Aug 13, 1968
                                
 
                                - 
                                         B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
 
 
- 
                
                
                    
                        3203565
                                - 
                                    Patent number 3,203,565
                                
- 
                                    Issue date Aug 31, 1965
                                
 
                                - 
                                         E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
 
 
- 
                
                
                    
                        3192875
                                - 
                                    Patent number 3,192,875
                                
- 
                                    Issue date Jul 6, 1965
                                
 
                                - 
                                         B22 - CASTING POWDER METALLURGY B22 - CASTING POWDER METALLURGY
 
 
- 
                
                
                    
                        3186356
                                - 
                                    Patent number 3,186,356
                                
- 
                                    Issue date Jun 1, 1965
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3166022
                                - 
                                    Patent number 3,166,022
                                
- 
                                    Issue date Jan 19, 1965
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3132600
                                - 
                                    Patent number 3,132,600
                                
- 
                                    Issue date May 12, 1964
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3126840
                                - 
                                    Patent number 3,126,840
                                
- 
                                    Issue date Mar 31, 1964
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3123017
                                - 
                                    Patent number 3,123,017
                                
- 
                                    Issue date Mar 3, 1964
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3120823
                                - 
                                    Patent number 3,120,823
                                
- 
                                    Issue date Feb 11, 1964
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3120822
                                - 
                                    Patent number 3,120,822
                                
- 
                                    Issue date Feb 11, 1964
                                
 
                                - 
                                         B60 - VEHICLES IN GENERAL B60 - VEHICLES IN GENERAL
 
 
- 
                
                
                    
                        3118394
                                - 
                                    Patent number 3,118,394
                                
- 
                                    Issue date Jan 21, 1964
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3099229
                                - 
                                    Patent number 3,099,229
                                
- 
                                    Issue date Jul 30, 1963
                                
 
                                - 
                                         C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON... C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
 
 
- 
                
                
                    
                        3072074
                                - 
                                    Patent number 3,072,074
                                
- 
                                    Issue date Jan 8, 1963
                                
 
                                - 
                                         B61 - RAILWAYS B61 - RAILWAYS
 
 
- 
                
                
                    
                        3055316
                                - 
                                    Patent number 3,055,316
                                
- 
                                    Issue date Sep 25, 1962
                                
 
                                - 
                                         B22 - CASTING POWDER METALLURGY B22 - CASTING POWDER METALLURGY
 
 
- 
                
                
                    
                        3016846
                                - 
                                    Patent number 3,016,846
                                
- 
                                    Issue date Jan 16, 1962
                                
 
                                - 
                                         B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL