US2527765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film mount
Assignee: GAF Chemicals Corp
•
Filing: 1944-11-01
•
Granted: 1950-10-31
•
Expires: 1964-11-01
Abstract
No abstract record available.
Inventors
- 👤 Bruno C Roehrl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:04
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US227658A
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US1071226A
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US1245963A
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US1567310A
Cited
US1963439A
Cited
US2338189A
Cited
US2297285A
Cited
US2361479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |