David Dworschack

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Oak Creek, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Switch devices and methods for moving switch rails
- Patent number 11,964,686
- Issue date Apr 23, 2024
- Precision Rail and Mfg., Inc.
- David Dworschack
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
SYSTEMS AND METHODS FOR RETARDING THE SPEED OF A RAILCAR
- Publication number 20230303136
- Publication date Sep 28, 2023
- PRECISION RAIL AND MFG., INC.
- James D. Braatz
- B61 - RAILWAYS
Information Patent Application
SWITCH DEVICES AND METHODS FOR MOVING SWITCH RAILS
- Publication number 20220379934
- Publication date Dec 1, 2022
- PRECISION RAIL AND MFG., INC.
- David Dworschack
- B61 - RAILWAYS