Patent US4016877A successfully refreshed from Google Patents.
US2837166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packer
Assignee: Individual
•
Filing: 1951-04-02
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Granted: 1958-06-03
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Expires: 1971-04-02
Abstract
No abstract record available.
Inventors
- 👤 Breaux Hazel Inez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:25
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/06; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295; E21B33/12955
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2223099A
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US2270648A
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US2315931A
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US2332749A
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US2404692A
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US2426370A
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US2507262A
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US2500276A
Cited
US2440257A
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US2467801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |