US2491371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic control panel
Assignee: Vickers Inc
•
Filing: 1945-12-21
•
Granted: 1949-12-13
•
Expires: 1965-12-21
Abstract
No abstract record available.
Inventors
- 👤 Duncan B Gardiner
- 👤 Bernard L Readman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:16
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/021; B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/26; B23Q5/266; F01; F01L; F01L25/00; F01L25/02; F01L25/04; F01L25/06; F01L25/063
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) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |