Patent US2544058A successfully refreshed from Google Patents.
US2544058A
Expired / Lapsed
US
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Lock nut tightening and conduit reaming tool
Assignee: Individual
•
Filing: 1948-01-23
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Granted: 1951-03-06
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Expires: 1968-01-23
Abstract
No abstract record available.
Inventors
- 👤 Watkins Margaret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:25
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/48; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/907; Y10T428/00; Y10T428/12; Y10T428/12361; Y10T428/12389
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US673056A
Cited
US1038914A
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US1097096A
Cited
US1270705A
Cited
US1793477A
Cited
US1992474A
Cited
US2187221A
Cited
US2330242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |