Patent US2161600A successfully refreshed from Google Patents.
US2631334A
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US
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Process of making thin free films
Assignee: Rauland Borg Corp
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Filing: 1947-12-27
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Granted: 1953-03-17
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Expires: 1967-12-27
Abstract
No abstract record available.
Inventors
- 👤 James S Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:28
CPC Classifications
B; B29; B29C; B29C39/00; B29C39/22; B29C39/38; C; C08; C08J; C08J5/00; C08J5/18; B29K; B29K2077/00; C08J2377/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US826781A
Cited
US2219700A
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US2278722A
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US2141169A
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US2176153A
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US2303871A
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US2353717A
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US2285009A
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US2368486A
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US2562373A
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US2485372A
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US2485373A
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US2465821A
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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) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |