US2677294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic driving implement
Assignee: Individual
•
Filing: 1950-11-25
•
Granted: 1954-05-04
•
Expires: 1970-11-25
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:12
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/02; B25B23/08; B25B23/12; Y; Y10; Y10S; Y10S7/00; Y10S7/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US512381A
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US1328428A
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US1492908A
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US1542266A
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US1419100A
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US1643901A
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DE474971C
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US2260055A
Cited
US2502025A
Cited
US2475936A
Cited
US2630036A
Cited
US2624223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |