JB

John Brennan

📍 Guelph, CA: #2 of 10 inventorsTop 20%
Overall (1982): #53,797 of 81,411Top 70%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4338847 Electromagnetic devices for actuating piano keys — 1982-07-13