US3440775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled removal of coatings from discrete areas of photographic film
Assignee: GAF Corp
•
Filing: 1966-01-10
•
Granted: 1969-04-29
•
Expires: 1986-01-10
Abstract
No abstract record available.
Inventors
- 👤 Hudson A Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:04
CPC Classifications
B; B24; B24C; B24C1/00; B24C1/08; B24C1/086; B24C1/04; G; G03; G03D; G03D15/00; G03D15/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1125232A
Cited
US2037047A
Cited
US2092083A
Cited
US2455514A
Cited
US2448316A
Cited
US2993309A
Cited
US3179025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |