US2981110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure fluid systems
Assignee: Individual
•
Filing: 1956-04-26
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Granted: 1961-04-25
•
Expires: 1976-04-26
Abstract
No abstract record available.
Inventors
- 👤 Fenn Arthur George
- 👤 Hunt Reginald James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:51
CPC Classifications
G; G01; G01L; G01L19/00; G01L19/06; G01L19/0618; F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0446; F16K17/0453; F16K17/168; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7794
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) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |