Invention Grant
- Patent Title: Toning photographic prints
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Application No.: US28021639Application Date: 1939-06-20
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Publication No.: US2231201APublication Date: 1941-02-11
- Inventor: SNYDER FRANCIS H , RIMBACH HENRY W
- Applicant: TECHNICO INC
- Assignee: Technico Inc
- Current Assignee: Technico Inc
- Priority: US28021639 1939-06-20; US5979436 1936-01-18; US469133X 1935-02-26
- Main IPC: G03C5/46
- IPC: G03C5/46
Information query
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