Inventor · disambiguated record
Darrell Johnston
Also filed as: JOHNSTON DARRELL · JOHNSTON DARRELL N · JOHNSTON DARRELL NICKSON
6 granted patents·1 pending application·88 citations·filing 1991–2017
82Inventor score
Top patents by PatentIndex Score
7 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
- 0386US5301592ABass drum foot pedalJOHNSTON DARRELL N·Filed 1991·Granted Apr 12, 1994·40 cites·2 claims
- 0481US8642868B1Beater bracket and variable drive lever system with variable pivot point spring rotor for bass drum foot pedalsAXIS PERCUSSION INC·Filed 2013·Granted Feb 4, 2014·7 cites·8 claims
- 0553US7598445B1Detonator with cushioned malletJOHNSTON DARRELL N·Filed 2008·Granted Oct 6, 2009·2 cites·16 claims
- 0642US10121462B2Universal trigger moduleAXIS PERCUSSION INC·Filed 2017·Granted Nov 6, 2018·0 cites·6 claims
- 0735US2013000460A1Mounting system for acoustic musical instrumentsJOHNSTON DARRELL·Filed 2012·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →