Del E. Walker

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Lake Quivira, KS, US

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Patents Grantslast 30 patents

Information Patent Grant
Boxcar door having balsa core sandwich construction
- Patent number 5,016,395
- Issue date May 21, 1991
- Aera Transportation Products, Inc.
- Del E. Walker
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Cover construction for waste containers
- Patent number 4,934,562
- Issue date Jun 19, 1990
- Aero Transportation Products
- Stephen R. Early
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Aerodynamic end closures for railway hopper cars
- Patent number 4,909,154
- Issue date Mar 20, 1990
- Aero Transportation Products, Inc.
- Del E. Walker
- B61 - RAILWAYS