JG

John T. Gollehon

📍 Grand Rapids, MI: #1 of 44 inventorsTop 3%
🗺 Michigan: #148 of 1,972 inventorsTop 8%
Overall (1982): #11,900 of 81,411Top 15%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D266243 Loudspeaker 1982-09-21
4314620 Loudspeaker with cone driven horn 1982-02-09