US2485074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure control
Assignee: MERIT ENGINEERING Inc
•
Filing: 1946-06-17
•
Granted: 1949-10-18
•
Expires: 1966-06-17
Abstract
No abstract record available.
Inventors
- 👤 Stevenson Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:14
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/027; F15B1/033; G; G05; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/2066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2197772A
Cited
US2240607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |