ML

Marvin L. Ledtje

SP Spectra-Physics: 2 patents #71 of 257Top 30%
📍 San Jose, CA: #17,604 of 32,062 inventorsTop 55%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,315,336 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5002662 Check valve Aubrey D. Long, Jr. 1991-03-26
4862907 Check valve Aubrey D. Long, Jr. 1989-09-05