Inventor · disambiguated record
Donald N. Seyfried
Also filed as: SEYFRIED DONALD N
5 granted patents·52 citations·filing 1975–1985
80Inventor score
Files withMINSTER MACHINE CO5
Top patents by PatentIndex Score
5 records- 0163US4442691ADouble action press having floating punchMINSTER MACHINE CO·Filed 1983·Granted Apr 17, 1984·16 cites·17 claims
- 0251US3986448ASimplified rolling bolster system for pressMINSTER MACHINE CO·Filed 1975·Granted Oct 19, 1976·11 cites·5 claims
- 0348US4554814AAir transfer system and method for a shell pressMINSTER MACHINE CO·Filed 1984·Granted Nov 26, 1985·11 cites·28 claims
- 0444US4513600ACam actuated ejector for a shell pressMINSTER MACHINE CO·Filed 1983·Granted Apr 30, 1985·8 cites·16 claims
- 0538US4627264ACam actuated ejector for a shell pressMINSTER MACHINE CO·Filed 1985·Granted Dec 9, 1986·6 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →