Individual holder
DURHAM ROGER O
8 granted patents·238 citations·filing 1981–1993
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
8 records- 0193US4704919ATwo-piece crankshaft for bicyclesDURHAM ROGER O·Filed 1986·Granted Nov 10, 1987·82 cites·4 claims
- 0274US4373760ADrawbolt bearing support for bicycle pedalsDURHAM ROGER O·Filed 1981·Granted Feb 15, 1983·27 cites·2 claims
- 0372US4728218ALocking key mechanismDURHAM ROGER O·Filed 1986·Granted Mar 1, 1988·36 cites·6 claims
- 0468US4526558AChain engagement slot for bicycle sprocketsDURHAM ROGER O·Filed 1983·Granted Jul 2, 1985·21 cites·4 claims
- 0567US4758205ADerailleur mechanism for bicyclesDURHAM ROGER O·Filed 1986·Granted Jul 19, 1988·23 cites·14 claims
- 0664US5305654AHeadset for bicycles with external forksDURHAM ROGER O·Filed 1993·Granted Apr 26, 1994·34 cites·2 claims
- 0750US4840084AFreewheel mechanism for bicyclesDURHAM ROGER O·Filed 1987·Granted Jun 20, 1989·12 cites·5 claims
- 0830US4940340ASealed ball bearing mechanismDURHAM ROGER O·Filed 1990·Granted Jul 10, 1990·3 cites·3 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →