Patent US2144028A successfully refreshed from Google Patents.
US2808591A
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Assignee: Individual
•
Filing: 1956-05-28
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Granted: 1957-10-08
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Expires: 1976-05-28
Abstract
No abstract record available.
Inventors
- 👤 Verna C Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:51
CPC Classifications
A; A41; A41D; A41D3/00; A41D3/08; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/14; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/208; Y02A20/212
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |