Assignee
JOHNSTON DARRELL
US·2 granted patents·1 pending application·39 citations·filing 2011–2012
Technology mixG10D3
Top patents by PatentIndex Score
3 records- 0192US8455746B2Beater bracket and variable drive lever system with variable pivot point spring rotor for bass drum foot pedalsJOHNSTON DARRELL·Filed 2011·Granted Jun 4, 2013·28 cites·6 claims
- 0287US8686265B2Topside spring tension adjuster for bass drum pedals with variable pivot point spring rotorJOHNSTON DARRELL·Filed 2012·Granted Apr 1, 2014·11 cites·10 claims
- 0335US2013000460A1Mounting system for acoustic musical instrumentsJOHNSTON DARRELL·Filed 2012·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →