RJ

Robert L. Sweigart, Jr.

PL Plastibec: 1 patents #49 of 130Top 40%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #4,070,937 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4333580 Mechanism for locking two halves of an underground vault — 1982-06-08