Patent US2278039A successfully refreshed from Google Patents.
US2278039A
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Assignee: Industrial Patents Corp
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Filing: 1940-10-30
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Granted: 1942-03-31
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Expires: 1960-10-30
Abstract
No abstract record available.
Inventors
- 👤 Beverly E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:39
CPC Classifications
A; A22; A22B; A22B5/00; A22B5/0064; B; B44; B44B; B44B7/00; B44B2700/00; B44B2700/08
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) | 1945-03-30 | 1945-09-29 | 1946-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-03-30 | 1949-09-29 | 1950-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-03-30 | 1953-09-29 | 1954-03-31 | $7700.00 | Window Closed / Lapsed |