HA

Harold A. Armstrong

📍 Long Beach, CA: #1,148 of 2,153 inventorsTop 55%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #4,013,387 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4511139 Baseball training bat — 1985-04-16