Jan Z. Tomaka

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Mount Royal, CA

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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
Top chord for open top hopper cars
- Patent number 4,840,127
- Issue date Jun 20, 1989
- Alcan International Limited
- Jan Z. Tomaka
- B61 - RAILWAYS
Information Patent Grant
Side sill arrangement for a gondola-type railroad car
- Patent number 4,800,820
- Issue date Jan 31, 1989
- Alcan International Limited
- Jan Z. Tomaka
- B61 - RAILWAYS