Patent US2490739A successfully refreshed from Google Patents.
US2490739A
Expired / Lapsed
US
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Extension handle for wrenches
Assignee: Individual
•
Filing: 1947-01-02
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Granted: 1949-12-06
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Expires: 1967-01-02
Abstract
No abstract record available.
Inventors
- 👤 Charles H Nesbitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:06
CPC Classifications
B; B25; B25G; B25G1/00; B25G1/04; B25G1/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE308164C
Cited
US154445A
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US627292A
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US805072A
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US905650A
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US1384705A
Cited
US1579992A
Cited
AU2403635A
Cited
GB470487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |