RH

Ralph A. Happe

🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #4,091,339 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4273020 Method of constructing trumpet or other brass instrument — 1981-06-16