US2721090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Socket retainer for rotary power tools
Assignee: Thor Power Tool Co
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Filing: 1952-03-15
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Granted: 1955-10-18
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Expires: 1972-03-15
Abstract
No abstract record available.
Inventors
- 👤 Frank A Kaman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:13
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/04; F16B7/0406; F16B7/0413; F16B7/042; B; B25; B25B; B25B23/00; B25B23/0007; B25B23/0035; F16D; F16D1/00; F16D1/10; F16D1/108; F16B2200/00; F16B2200/10; Y; Y10; Y10T; Y10T403/00; Y10T403/60; Y10T403/602; Y10T403/604
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) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |