Inventor · disambiguated record
Calvin H. Derr
Also filed as: DERR CALVIN · DERR CALVIN H
5 granted patents·1 pending application·116 citations·filing 1999–2017
81Inventor score
Top patents by PatentIndex Score
6 records- 0192US6298960B1Small viscous precision damperILLINOIS TOOL WORKS·Filed 2000·Granted Oct 9, 2001·70 cites·11 claims
- 0281US7510062B2Rotary damperILLINOIS TOOL WORKS·Filed 2006·Granted Mar 31, 2009·16 cites·5 claims
- 0370US9720183B2Fiber optic adapter with enhanced alignmentDALTON JOHN G·Filed 2009·Granted Aug 1, 2017·6 cites·15 claims
- 0466US6213454B1Reverse air damper with latching mechanismILLINOIS TOOL WORKS·Filed 1999·Granted Apr 10, 2001·24 cites·11 claims
- 0555US9891387B2Fiber optic adapter with enhanced alignmentPANDUIT CORP·Filed 2017·Granted Feb 13, 2018·0 cites·15 claims
- 0645US2008224370A1Latching rack damper assemblyDERR CALVIN·Filed 2007·Application pending·0 cites
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