US2760883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic ferrotyping process
Assignee: Individual
•
Filing: 1953-10-12
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Granted: 1956-08-28
•
Expires: 1973-10-12
Abstract
No abstract record available.
Inventors
- 👤 Roy L Pickett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:32
CPC Classifications
G; G03; G03C; G03C11/00; G03C11/16; G03C11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PHOTOGRAPHIC FERROTYPING PROCESS COMPRISING IMMERSING A FLEXIBLE PAPER PHOTOGRAPHIC PRINT IN A DILUTE AQUEOUS SOLUTION OF A CELLULOSE ETHER AND THEN CONTACTING THE THUS TREATED PRINT WITH A FERROTYPE SURFACE.
Claim 2
Dependent Claim
31 words
A PHOTOGRAPHIC FERROTYPING PROCESS COMPRISING IMMERSING A FLEXIBLE PAPER PHOTOGRAPHIC PRINT IN A DILUTE AQUEOUS SOLUTION OF A CELLULOSE ETHER AND THEN CONTACTING THE THUS TREATED PRINT WITH A FERROTYPE SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |