US2472396A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical speed control system
Assignee: Curtiss Wright Corp
•
Filing: 1944-10-06
•
Granted: 1949-06-07
•
Expires: 1964-10-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Schoenbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:30
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46; H02P5/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1490958A
Cited
US1553407A
Cited
US1553408A
Cited
US2176742A
Cited
US2302042A
Cited
US2258462A
Cited
US2246516A
Cited
US2308620A
Cited
US2325927A
Cited
US2408451A
Cited
US2382847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |