Leon A. Gainsboro

ON Opus Nv: 1 patents #3 of 7Top 45%

S1 Safety 1St: 1 patents #12 of 26Top 50%

📍 Wayland, MA: #315 of 613 inventorsTop 55%

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

Overall (All Time): #2,274,154 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5682835	Bird feeder	Glen V. Walter, Mark P. Zieff, John Stone	1997-11-04
4498423	Bird feeder	Peter A. Latham	1985-02-12