US2672674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of fibrous material in sheet form
Assignee: Individual
•
Filing: 1949-04-02
•
Granted: 1954-03-23
•
Expires: 1969-04-02
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:37
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/18; B32; B32B; B32B15/00; B32B15/02; B32B15/14; B32B5/00; B32B5/02; B32B5/022; B32B5/024; B32B5/06; B32B5/22; B32B5/24; B32B5/26; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/425; D04H1/4374; D04H1/44; D04H1/52; B32B2262/00; B32B2262/02; B32B2262/06; B32B2262/062; B32B2262/08; B32B2262/10; B32B2262/103; B32B2432/00; B32B2553/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/159
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |