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John W. Stempeck

PO Polaroid: 5 patents #148 of 898Top 20%
📍 Reading, MA: #142 of 473 inventorsTop 35%
🗺 Massachusetts: #23,459 of 88,656 inventorsTop 30%
Overall (All Time): #1,064,967 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
4571627 Electronic viewfinder 1986-02-18
4374613 Auto/manual camera employing common lens focusing data 1983-02-22
4369395 Electronic flash with safety switch feature 1983-01-18
4348087 Photographic system for automatically charging electronic flash Seymour Ellin 1982-09-07
4268138 Follow focus flash arrangement Richard J. Coppa, Seymour Ellin 1981-05-19