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US2274252A
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US
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Composition
Assignee: EIDP Inc
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Filing: 1938-04-13
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Granted: 1942-02-24
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Expires: 1958-04-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Tanberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:14
CPC Classifications
B; B01; B01J; B01J7/00; B01J7/02; A; A21; A21D; A21D2/00; A21D2/08; A23; A23L; A23L2/00; A23L2/40; A61; A61K; A61K9/00; A61K9/0002; A61K9/0007; A62; A62D; A62D1/00; A62D1/06
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) | 1945-02-23 | 1945-08-25 | 1946-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-23 | 1949-08-25 | 1950-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-23 | 1953-08-25 | 1954-02-24 | $7700.00 | Window Closed / Lapsed |