US2174797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulator
Assignee: FMC Corp
•
Filing: 1935-10-07
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Granted: 1939-10-03
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Expires: 1955-10-07
Abstract
No abstract record available.
Inventors
- 👤 Roy M Magnuson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:42
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/16; G05D16/166; G05D16/04; G05D16/10; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2622; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-10-02 | 1943-04-03 | 1943-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-02 | 1947-04-03 | 1947-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-02 | 1951-04-03 | 1951-10-03 | $7700.00 | Window Closed / Lapsed |