US2423749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic elements composed of orientable vinyl fluoride polymers
Assignee: EIDP Inc
•
Filing: 1944-03-16
•
Granted: 1947-07-08
•
Expires: 1964-03-16
Abstract
No abstract record available.
Inventors
- 👤 Austin Paul Rolland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:53
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; G03C1/795
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1425130A
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US1627935A
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US2074647A
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US2099976A
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US2362960A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-07 | 1951-01-06 | 1951-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-07 | 1955-01-06 | 1955-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-07 | 1959-01-06 | 1959-07-08 | $7700.00 | Window Closed / Lapsed |