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USPTO Patent Rankings Data through Dec 31, 2025
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Drum Workshop — 8 Patents in 2017

Rank (2017): #4,277 of 29,970Top 15%
7 inventors
8 Patents 2017

Top Inventors at Drum Workshop 2017

Showing 1–7 of 7 inventors

RankNamePatents
1 Richard A. Sikra 4
2 Andrzej Krol 3
2 Sergio G. Bonsignore 3
2 Victor Filonovich 3
#5 Ruben Steinhauser 1
#5 Thomas M Schwarz 1
#5 Piya Chandontrikit 1