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Home › Silver halide emulsions and photographic elements containing adsorbable alkynyl substituted heterocyclic quaternary ammonium salts

Silver halide emulsions and photographic elements containing adsorbable alkynyl substituted heterocyclic quaternary ammonium salts

US Patent 4471044 · Granted Sep 11, 1984

Estimated economic value: $3,981,000 ⓘ

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