US2824568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure regulators
Assignee: AIR ASSOCIATES Inc
•
Filing: 1954-05-06
•
Granted: 1958-02-25
•
Expires: 1974-05-06
Abstract
No abstract record available.
Inventors
- 👤 Everett G Gravenhorst
- 👤 Stephen G Evangelides
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:41
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0663; B; B64; B64C; B64C13/00; B64C13/24; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2607
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1210891A
Cited
US1737428A
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US1903338A
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US2089144A
Cited
US2248354A
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US2663121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |