Individual holder
SILBERNAGEL FREDERICK J
5 granted patents·144 citations·filing 1980–1991
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
5 records- 0187US4314709ALoad transfer trailer for transit mixerSILBERNAGEL FREDERICK J·Filed 1980·Granted Feb 9, 1982·47 cites·13 claims
- 0282USD291547SCement mixer truckSILBERNAGEL FREDERICK J·Filed 1984·Granted Aug 25, 1987·20 cites·1 claims
- 0381US5192178AExtensible discharge chute assemblySILBERNAGEL FREDERICK J·Filed 1991·Granted Mar 9, 1993·48 cites·20 claims
- 0475USD271875SFront discharge mixer truck with auxiliary rear axleSILBERNAGEL FREDERICK J·Filed 1981·Granted Dec 20, 1983·15 cites·1 claims
- 0567USD346388SArticulated self-propelled bi-directional soil stabilizer road reclaimer machineSILBERNAGEL FREDERICK J·Filed 1991·Granted Apr 26, 1994·14 cites·1 claims
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