US2930302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing of photographic film
Assignee: Specialties Inc
•
Filing: 1957-01-31
•
Granted: 1960-03-29
•
Expires: 1977-01-31
Abstract
No abstract record available.
Inventors
- 👤 Clifton M Tuttle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:40
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/30; G03B27/303
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US192223A
Cited
US1207042A
Cited
US1804793A
Cited
US1760149A
Cited
US1787824A
Cited
GB470197A
Cited
US2778269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |