US2955614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant tubing pressure choke
Assignee: Individual
•
Filing: 1956-03-01
•
Granted: 1960-10-11
•
Expires: 1976-03-01
Abstract
No abstract record available.
Inventors
- 👤 Meynig Robert Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:04
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/02; E21B34/025; G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; E21B2200/00; E21B2200/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7796; Y10T137/7805; Y10T137/8593; Y10T137/87265; Y10T137/8733; Y10T137/87539
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US385052A
Cited
US866503A
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US1115244A
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US1199847A
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US1430505A
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US1979910A
Cited
US2091051A
Cited
US2623331A
Cited
US2766593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |