Inventor · disambiguated record
Richard A. Schafer
Also filed as: SCHAFER RICHARD · SCHAFER RICHARD A · SCHAFER RICHARD ARTHUR
6 granted patents·103 citations·filing 1975–2002
84Inventor score
Top patents by PatentIndex Score
6 records- 0184US4216975ATractor hitchDEERE & CO·Filed 1978·Granted Aug 12, 1980·39 cites·57 claims
- 0274US4397359ATractor hitch with yoke having pivotally supported upper endDEERE & CO·Filed 1981·Granted Aug 9, 1983·23 cites·21 claims
- 0371US4271910ADraft sensing device including load pin with free endDEERE & CO·Filed 1979·Granted Jun 9, 1981·15 cites·14 claims
- 0470US6701277B2Elevator car position sensing systemOTIS ELEVATOR CO·Filed 2002·Granted Mar 2, 2004·16 cites·7 claims
- 0545US4008906ABall couplingDEERE & CO·Filed 1975·Granted Feb 22, 1977·9 cites·8 claims
- 0630US4219212ATractor implement hitchDEERE & CO·Filed 1978·Granted Aug 26, 1980·1 cites·2 claims
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