SP

Sheldon D. Powers

PO Polaroid: 2 patents #349 of 898Top 40%
📍 Stoneham, MA: #136 of 278 inventorsTop 50%
🗺 Massachusetts: #42,150 of 88,656 inventorsTop 50%
Overall (All Time): #2,372,187 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4300822 Multipurpose film cassette having balanced force process mode switch — 1981-11-17
4188098 Photographic film cassette having bowed spring with device preventing overstressing of spring — 1980-02-12