US3471292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film with deformed end surface and detachable lead strip
Assignee: Individual
•
Filing: 1968-09-24
•
Granted: 1969-10-07
•
Expires: 1988-09-24
Abstract
No abstract record available.
Inventors
- 👤 Frederic G Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:21
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/56; G03C; G03C1/00; G03C1/76; G03C1/765; G03C3/00; G03D; G03D15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1524508A
Cited
US1836699A
Cited
US2114187A
Cited
US2233010A
Cited
US2626429A
Cited
US3178494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |