Inventor · disambiguated record
David Dworschack
Also filed as: DWORSCHACK DAVID
1 granted patent·2 pending applications·0 citations·filing 2021–2023
6Inventor score
Files withPREC RAIL AND MFG INC3
Top patents by PatentIndex Score
3 records- 0149US11964686B2Switch devices and methods for moving switch railsPREC RAIL AND MFG INC·Filed 2021·Granted Apr 23, 2024·0 cites·20 claims
- 0246US2023331265A1Systems and methods for retarding the speed of a railcarPREC RAIL AND MFG INC·Filed 2023·Application pending·0 cites
- 0345US2023303136A1Systems and methods for retarding the speed of a railcarPREC RAIL AND MFG INC·Filed 2023·Application pending·0 cites
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