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US2440854A
Expired / Lapsed
US
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Screw or nut driver
Assignee: Individual
•
Filing: 1944-08-14
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Granted: 1948-05-04
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Expires: 1964-08-14
Abstract
No abstract record available.
Inventors
- 👤 Frank Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:28
CPC Classifications
B; B25; B25G; B25G1/00; B25G1/10; B25G1/105; B25G1/107; B25B; B25B15/00; B25B15/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US312221A
Cited
US348765A
Cited
US453211A
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US487123A
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US922080A
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US1057101A
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US1797614A
Cited
AT150599B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |