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John F. Deppen
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New Cumberland, PA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Common cast draft sill for type E and F draft gear
Patent number
6,986,432
Issue date
Jan 17, 2006
ASF-Keystone, Inc.
Paul A. Limbach
B61 - RAILWAYS
Information
Patent Grant
Railcar draft gear assembly and system
Patent number
6,681,943
Issue date
Jan 27, 2004
AMSTED Industries Incorporated
Ronald E. Barker
B61 - RAILWAYS
Information
Patent Grant
Railcar draft gear assembly and system
Patent number
6,446,820
Issue date
Sep 10, 2002
AMSTED Industries Incorporated
Ronald E. Barker
B61 - RAILWAYS
Information
Patent Grant
Double acting center-of-car cushioning device
Patent number
5,746,335
Issue date
May 5, 1998
Keystone Industries, Inc.
Steve A. Brough
B61 - RAILWAYS
Patents Applications
last 30 patents
Information
Patent Application
Common cast draft sill for type E and F draft gear
Publication number
20040245202
Publication date
Dec 9, 2004
ASF-KEYSTONE, INC.
Paul A. Limbach
B61 - RAILWAYS
Information
Patent Application
Railcar draft gear assembly and system
Publication number
20020070189
Publication date
Jun 13, 2002
Ronald E. Barker
B61 - RAILWAYS