Patent US2657700A successfully refreshed from Google Patents.
US2657700A
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Method of and apparatus for segregating fluids transported by a pipeline
Assignee: Phillips Petroleum Co
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Filing: 1949-11-14
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Granted: 1953-11-03
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Expires: 1969-11-14
Abstract
No abstract record available.
Inventors
- 👤 Gardner C Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:46
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/85; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2509; Y10T436/00; Y10T436/21; Y10T436/212; Y10T436/214; Y10T436/216
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) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |