US2696196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valve for hydraulic apparatus
Assignee: Denison Engineering Co
•
Filing: 1949-02-18
•
Granted: 1954-12-07
•
Expires: 1969-02-18
Abstract
No abstract record available.
Inventors
- 👤 Cecil E Adams
- 👤 Ellis H Born
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:27
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/86702
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US853693A
Cited
US1533800A
Cited
US1964196A
Cited
US2002717A
Cited
US2335809A
Cited
GB524564A
Cited
US2367241A
Cited
US2219896A
Cited
US2374593A
Cited
US2410404A
Cited
US2416722A
Cited
US2464283A
Cited
US2590137A
Cited
US2609794A
Cited
US2448557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |