Patent US2753474A successfully refreshed from Google Patents.
US2753474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatory magnet actuator
Assignee: WINTERBURN
•
Filing: 1951-03-31
•
Granted: 1956-07-03
•
Expires: 1971-03-31
Abstract
No abstract record available.
Inventors
- 👤 Clarence B Walworth
- 👤 George A Winterburn
- 👤 Leroy E Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:23
CPC Classifications
H; H01; H01H; H01H36/00; H01H36/0073
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1529470A
Cited
FR720957A
Cited
US1874199A
Cited
US1956279A
Cited
US2109953A
Cited
US2207506A
Cited
US2310138A
Cited
US2353740A
Cited
US2498683A
Cited
US2521723A
Cited
US2448779A
Cited
US2584907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |