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Home › High contrast photographic element including an aryl sulfonamidophenyl hydrazide containing both thio and ethyleneoxy groups

High contrast photographic element including an aryl sulfonamidophenyl hydrazide containing both thio and ethyleneoxy groups

US Patent 4988604 · Granted Jan 29, 1991

Estimated economic value: $3,402,000 ⓘ

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