Patent US3033289A successfully refreshed from Google Patents.
US3033289A
Expired / Lapsed
US
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Apparatus for unplugging pipe in a well bore
Assignee: Individual
•
Filing: 1958-05-15
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Granted: 1962-05-08
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Expires: 1978-05-15
Abstract
No abstract record available.
Inventors
- 👤 Lawrence K Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:45
CPC Classifications
E; E21; E21B; E21B31/00; E21B31/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1824283A
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US2647008A
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US2749989A
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US2806535A
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US2772738A
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US2782860A
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US2829715A
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US2796130A
Cited
US2908333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |