Patent US2188779A successfully refreshed from Google Patents.
US2188779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sealing film roll for cameras
Assignee: GAF Chemicals Corp
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Filing: 1938-01-05
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Granted: 1940-01-30
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Expires: 1958-01-05
Abstract
No abstract record available.
Inventors
- 👤 Bruno C Roehri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:48
CPC Classifications
G; G03; G03C; G03C3/00; G03C3/02; Y; Y10; Y10S; Y10S206/00; Y10S206/813
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-01-29 | 1943-07-31 | 1944-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-01-29 | 1947-07-31 | 1948-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-01-29 | 1951-07-31 | 1952-01-30 | $7700.00 | Window Closed / Lapsed |