US2795285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical control apparatus for variable pitch propellers
Assignee: Westinghouse Electric Corp
•
Filing: 1953-07-29
•
Granted: 1957-06-11
•
Expires: 1973-07-29
Abstract
No abstract record available.
Inventors
- 👤 Guy W Champney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:48
CPC Classifications
B; B63; B63H; B63H3/00; B63H3/10; H; H02; H02P; H02P29/00; H02P29/40
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) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |