US2669417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced slide valve for high hydraulic pressures
Assignee: General Controls Co
•
Filing: 1950-06-29
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Granted: 1954-02-16
•
Expires: 1970-06-29
Abstract
No abstract record available.
Inventors
- 👤 William A Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:34
CPC Classifications
F; F16; F16K; F16K39/00; F16K39/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86791; Y10T137/86799; Y10T137/87265; Y10T137/87322; Y10T137/8741; Y10T137/87418
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US60378A
Cited
US486747A
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US817153A
Cited
US910163A
Cited
US930860A
Cited
US1507280A
Cited
US2291563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |