US2661768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating orifice plate for threaded orifice union
Assignee: Standard Oil Development Co
•
Filing: 1949-10-29
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Granted: 1953-12-08
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Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 August W Novak
- 👤 Roy F Mildrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:20
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/024; F16L1/06; F16L1/11; G; G01; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/40; G01F1/42
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) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |