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Del E. Walker
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Lake Quivira, KS, US
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last 30 patents
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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
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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
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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