Patent US3057295A successfully refreshed from Google Patents.
US3057295A
Expired / Lapsed
US
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Apparatus for cutting oil well tubing and the like
Assignee: Jet Research Center Inc
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Filing: 1958-10-09
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Granted: 1962-10-09
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Expires: 1978-10-09
Abstract
No abstract record available.
Inventors
- 👤 Glenn B Christopher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:24
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2761384A
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DE900201C
Cited
US2947250A
Cited
US2873675A
Cited
US2927534A
Cited
US2935944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |