John Francis Otis

📍 Westford, MA: #524 of 1,013 inventorsTop 55%

🗺 Massachusetts: #42,150 of 88,656 inventorsTop 50%

Overall (All Time): #2,159,961 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
7252105	Rolling cane, walker-trainer, shopper with automatic braking	—	2007-08-07
4552323	Cable dispensing apparatus	—	1985-11-12