RB

Robert Butts

DI Dwyer Instruments: 1 patents #21 of 56Top 40%
Overall (All Time): #1,475,115 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9920539 Adjustable arch measuring tool and associated use thereof 2018-03-20
5906049 Double-ended utility knife with two covers 1999-05-25
D255666 Air velocity gauge Steven O. Buchanan 1980-07-01