Patent US4536274A successfully refreshed from Google Patents.
Patent US2291238A successfully refreshed from Google Patents.
US2291238A
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Method and apparatus for producing pellicles
Assignee: EIDP Inc
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Filing: 1937-11-30
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Granted: 1942-07-28
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Expires: 1957-11-30
Abstract
No abstract record available.
Inventors
- 👤 Richard J Kimmick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:39
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/16; B29C48/18; B29C48/19; B29C2793/00; B29C2793/0063; B29C48/001; B29C48/0013; B29C48/0014; B29C48/0018; B29C48/0019; B29C48/0021; B29C48/0022; B29C48/03; B29C48/07; B29C48/08; B29C48/09; B29C48/10; B29C48/17
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) | 1945-07-27 | 1946-01-26 | 1946-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-27 | 1950-01-26 | 1950-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-27 | 1954-01-26 | 1954-07-28 | $7700.00 | Window Closed / Lapsed |