US2950682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling pipeline pressure
Assignee: Phillips Petroleum Co
•
Filing: 1955-08-25
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Granted: 1960-08-30
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Expires: 1975-08-25
Abstract
No abstract record available.
Inventors
- 👤 Norman A Kimmel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:28
CPC Classifications
F; F16; F16L; F16L55/00; F17; F17D; F17D1/00; F17D1/08; F17D1/14; G; G05; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/208; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0379
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1279613A
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US1341696A
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US2309415A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |