Patent US2629445A successfully refreshed from Google Patents.
US2629445A
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US
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Pipe severing method and apparatus
Assignee: Individual
•
Filing: 1946-11-23
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Granted: 1953-02-24
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Expires: 1966-11-23
Abstract
No abstract record available.
Inventors
- 👤 Glenn A Dill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:11
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1383670A
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US1582184A
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US1641483A
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US2037938A
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US2144208A
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US2200505A
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US2201290A
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US2292938A
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US2476137A
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US2436036A
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US2525391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |