US2773556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically treating and metering oil field production
Assignee: Shell Development Co
•
Filing: 1955-01-18
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Granted: 1956-12-11
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Expires: 1975-01-18
Abstract
No abstract record available.
Inventors
- 👤 Douglas C Meyers
- 👤 William B Banks
- 👤 Lucian E Slagle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:06
CPC Classifications
C; C10; C10G; C10G31/00; C10G7/00; G; G01; G01F; G01F11/00; G01F11/28; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/264; Y10T137/4673
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2457959A
Cited
US2682353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |