John T. Gollehon

📍 Grand Rapids, MI: #715 of 1,824 inventorsTop 40%

🗺 Michigan: #35,034 of 86,293 inventorsTop 45%

Overall (All Time): #2,365,380 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
D266243	Loudspeaker	—	1982-09-21
4314620	Loudspeaker with cone driven horn	—	1982-02-09