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Robert E. Derby — 2 Patents

ANAndis: 2 patents #22 of 39Top 60%

Racine, WI: #460 of 1,018 inventorsTop 50%

Wisconsin: #17,084 of 40,088 inventorsTop 45%

Overall (All Time): #2,183,871 of 4,157,543Top 55%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
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