Patent US2404982A successfully refreshed from Google Patents.
US2404982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay control circuit
Assignee: Westinghouse Electric Corp
•
Filing: 1945-01-13
•
Granted: 1946-07-30
•
Expires: 1965-01-13
Abstract
No abstract record available.
Inventors
- 👤 James B Owens
- 👤 Robert H Hitson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:36
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-07-29 | 1950-01-28 | 1950-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-29 | 1954-01-28 | 1954-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-29 | 1958-01-28 | 1958-07-30 | $7700.00 | Window Closed / Lapsed |