Patent US3369561A successfully refreshed from Google Patents.
US3369561A
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US
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System for automatic regulation of flow rate and pressure at a remote location
Assignee: Halliburton Co
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Filing: 1966-05-04
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Granted: 1968-02-20
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Expires: 1986-05-04
Abstract
No abstract record available.
Inventors
- 👤 Carl W Zimmerman
- 👤 Jack R Hulme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:12
CPC Classifications
F; F16; F16L; F16L55/00; G; G05; G05D; G05D16/00; G05D16/20; G05D16/2093; G05D16/2095; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/7761
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |