RS

Richard A. Sikra

DW Drum Workshop: 4 patents #1 of 7Top 15%
Overall (2017): #39,190 of 506,227Top 8%
4
Patents 2017

Issued Patents 2017

Patent #TitleCo-InventorsDate
9721549 Drum stand basket with spring adjustment and other features Ruben Steinhauser 2017-08-01
9640154 Hi-hat pedal assembly 2017-05-02
9601096 Cymbal holder with slotted threads and plunger 2017-03-21
9589546 Drum pedal with adjustment features 2017-03-07