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Robert E. Derby — 2 Patents

ANAndis: 2 patents #22 of 39Top 60%
Racine, WI: #464 of 1,018 inventorsTop 50%
Wisconsin: #17,225 of 40,088 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Robert E. Derby has been granted 2 US patents while listed as an inventor at Andis. The first was granted in 2000 and the most recent in September 2005. Robert E. Derby ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Robert E. Derby in Racine, WI, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6948248 Hair trimmer Matthew L. Andis, Richard J. Tringali 2005-09-27
6112414 Rechargeable hair clipper assembly Matthew L. Andis, John M. Piwaron 2000-09-05

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