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Home › Photographic products and processes employing substituted sulfonamidophenol or sulfonamidonaphthol dye-releasers

Photographic products and processes employing substituted sulfonamidophenol or sulfonamidonaphthol dye-releasers

US Patent 4407930 · Granted Oct 4, 1983

Estimated economic value: $11,185,000 ⓘ

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