US2585290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orifice plate fitting
Assignee: HAROLD M NORTHCUTT
•
Filing: 1948-12-27
•
Granted: 1952-02-12
•
Expires: 1968-12-27
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:45
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/02; F16K5/0207; F16L; F16L55/00; F16L55/10; 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)
US2007036A
Cited
US904307A
Cited
US1068280A
Cited
US1180312A
Cited
US1995490A
Cited
US1972151A
Cited
US2352368A
Cited
US2462493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |