US2696828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unloader valve with means for preventing pressure surges
Assignee: AIR ASSOCIATES Inc
•
Filing: 1952-06-11
•
Granted: 1954-12-14
•
Expires: 1972-06-11
Abstract
No abstract record available.
Inventors
- 👤 Albert J Husing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:37
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B11/028; F15B2211/00; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50536; F15B2211/57; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2622; Y10T137/2625; Y10T137/7722; Y10T137/7771; Y10T137/778
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |