Patent US3796439A successfully refreshed from Google Patents.
Patent US2629335A successfully refreshed from Google Patents.
US2629335A
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Gas lift apparatus
Assignee: GARRETT OIL TOOLS Inc
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Filing: 1946-10-17
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Granted: 1953-02-24
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Expires: 1966-10-17
Abstract
No abstract record available.
Inventors
- 👤 Clifford M Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:46
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2934
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1981965A
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US2314869A
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US2265835A
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US2366146A
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US2377981A
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US2342301A
Cited
US2331503A
Cited
US2437187A
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US2465060A
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 |