John A. Ritter

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Cincinnati, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Railroad gondola or hopper car, particularly a coal car
- Patent number 4,930,427
- Issue date Jun 5, 1990
- Thrall Car Manufacturing Company
- John A. Ritter
- B61 - RAILWAYS
Information Patent Grant
Hopper car with automatic discharge door mechanism
- Patent number 4,843,974
- Issue date Jul 4, 1989
- Thrall Car Manufacturing Company
- John A. Ritter
- B61 - RAILWAYS
Information Patent Grant
Hopper car with automatic discharge door mechanism
- Patent number 4,766,820
- Issue date Aug 30, 1988
- Thrall Car Manufacturing Company
- John A. Ritter
- B61 - RAILWAYS
Information Patent Grant
Railroad car with double stack container restraint system
- Patent number 4,759,294
- Issue date Jul 26, 1988
- Thrall Car Manufacturing Company
- James J. Schuller
- B61 - RAILWAYS
Information Patent Grant
Railway box car conversion to highway trailer-carrying flatcar and...
- Patent number 4,562,633
- Issue date Jan 7, 1986
- Ortner Freight Car Company
- Norman S. Adams
- B61 - RAILWAYS