Patent EP0836320A2 successfully refreshed from Google Patents.
Patent US2249507A successfully refreshed from Google Patents.
US2249507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film or sheet forming apparatus
Assignee: Eastman Kodak Co
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Filing: 1940-03-06
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Granted: 1941-07-15
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Expires: 1960-03-06
Abstract
No abstract record available.
Inventors
- 👤 Henry E Van Derhoef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:14
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/911; B29C48/9135; B29C48/914; B29C48/03; B29C48/07; B29C48/08; B29C48/30; B29C48/35
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) | 1944-07-14 | 1945-01-13 | 1945-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-14 | 1949-01-13 | 1949-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-14 | 1953-01-13 | 1953-07-15 | $7700.00 | Window Closed / Lapsed |