W. Duane Hamilton

AO American Optical: 3 patents #20 of 106Top 20%

NC N. A. Taylor Co.: 1 patents #6 of 12Top 50%

📍 Middletown, RI: #25 of 111 inventorsTop 25%

🗺 Rhode Island: #1,504 of 6,211 inventorsTop 25%

Overall (All Time): #1,308,978 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
4489955	Wheelchair	—	1984-12-25
4288710	Drive mechanism	—	1981-09-08
4277044	Mechanical counterbalance	—	1981-07-07
4271636	Lens generating apparatus	—	1981-06-09