US2660875A
Expired / Lapsed
US
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Assignee: DETROIT HARDWARD Manufacturing Co
•
Filing: 1949-09-07
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Granted: 1953-12-01
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Expires: 1969-09-07
Abstract
No abstract record available.
Inventors
- 👤 Deane N Jewett
- 👤 Richard S Jewett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:43
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/0017; E05B15/00; E05B15/16; E05B15/1614; E05B15/1621; E05B17/00; E05B17/0004; E05B17/0008; E05B65/00; E05B65/0028; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1022; Y10T292/1028; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/55; Y10T70/5504; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/752; Y10T70/7531
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) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |