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John A. Sperry

AL Autotype International Limited: 3 patents #2 of 12Top 20%
📍 Norton, GB: #36 of 216 inventorsTop 20%
Overall (All Time): #1,300,358 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5043362 Photopolymerizable compositions Ross A. Balfour 1991-08-27
4824765 Water-soluble photoinitiators Ross A. Balfour 1989-04-25
4478977 Photopolymer derivatives of polyvinyl alcohol Dennis D. Maguire 1984-10-23
4477552 Stabilization of diazo-resin sensitizers with polyvinyl pyridine Peter M. G. Day, John Jones 1984-10-16