John T. Siwula

📍 Jamestown, NY: #13 of 125 inventorsTop 15%

🗺 New York: #26,803 of 115,490 inventorsTop 25%

Overall (All Time): #1,066,169 of 4,157,543Top 30%

Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date
4478413	Torsion type exercise device	—	1984-10-23
D274179	Combined electronic calculator and checkbook	—	1984-06-05
4308588	Electronic checkbook	—	1981-12-29
4290708	Attachable microprocessors	—	1981-09-22
4222109	Electronic checkbook	—	1980-09-09