Patent DE308048C successfully refreshed from Google Patents.
US2898792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-operated track wrench
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
•
Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:38
CPC Classifications
B; B25; B25B; B25B21/00; B25B21/002; B23; B23P; B23P19/00; B23P19/04; B23P19/06; E; E01; E01B; E01B29/00; E01B29/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2137998A
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Cited
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Cited
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Cited
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Cited
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US2780950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |