-
2668743
-
Patent number 2,668,743
-
Issue date Feb 9, 1954
-
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
-
2420820
-
Patent number 2,420,820
-
Issue date May 20, 1947
-
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
-
2326426
-
Patent number 2,326,426
-
Issue date Aug 10, 1943
-
B61 - RAILWAYS
-
2180315
-
Patent number 2,180,315
-
Issue date Nov 14, 1939
-
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
-
1871518
-
Patent number 1,871,518
-
Issue date Aug 16, 1932
-
B61 - RAILWAYS
-
1777578
-
Patent number 1,777,578
-
Issue date Oct 7, 1930
-
B61 - RAILWAYS
-
1777579
-
Patent number 1,777,579
-
Issue date Oct 7, 1930
-
B61 - RAILWAYS
-
1746129
-
Patent number 1,746,129
-
Issue date Feb 4, 1930
-
B61 - RAILWAYS
-
1703585
-
Patent number 1,703,585
-
Issue date Feb 26, 1929
-
B61 - RAILWAYS
-
1399810
-
Patent number 1,399,810
-
Issue date Dec 13, 1921
-
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
-
1363663
-
Patent number 1,363,663
-
Issue date Dec 28, 1920
-
B61 - RAILWAYS