US2491624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool operating mechanism
Assignee: KELLER TOOL CO
•
Filing: 1945-03-29
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Granted: 1949-12-20
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Expires: 1965-03-29
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Shaff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:58
CPC Classifications
F; F16; F16H; F16H23/00; F16H23/04; B; B25; B25B; B25B21/00; B25B21/004; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18336
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US577103A
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US756700A
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US829658A
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US1679884A
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US1901981A
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DE555592C
Cited
US1973064A
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US2161210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |