US3362347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas lift systems and valves
Assignee: Otis Engineering Corp
•
Filing: 1966-01-05
•
Granted: 1968-01-09
•
Expires: 1986-01-05
Abstract
No abstract record available.
Inventors
- 👤 Carlos R Canalizo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:26
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)
US2278532A
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US2345865A
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US2465060A
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US2556867A
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US2633086A
Cited
US2658460A
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US2725014A
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US2761465A
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US3139040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |