Assignee
DIFCO INC
US·5 granted patents·158 citations·filing 1992–1995
Top patents by PatentIndex Score
5 records- 0189US5359942ARemote control positioning system for controlling hopper doorsDIFCO INC·Filed 1993·Granted Nov 1, 1994·82 cites·18 claims
- 0281US5261333AAutomated ballast door mechanismDIFCO INC·Filed 1992·Granted Nov 16, 1993·46 cites·22 claims
- 0346US5606916AHopper door operating mechanismDIFCO INC·Filed 1995·Granted Mar 4, 1997·13 cites·11 claims
- 0438US5579593ARailroad ballast spreading (plow) systemDIFCO INC·Filed 1995·Granted Dec 3, 1996·12 cites·7 claims
- 0535US5402731AActuator assemblyDIFCO INC·Filed 1993·Granted Apr 4, 1995·5 cites·16 claims
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