US2668207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic relay or switch
Assignee: Hart Manufacturing Co
•
Filing: 1949-07-22
•
Granted: 1954-02-02
•
Expires: 1969-07-22
Abstract
No abstract record available.
Inventors
- 👤 Bertil S Bengtsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:54
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US767703A
Cited
US1849643A
Cited
US2238076A
Cited
US2307025A
Cited
US2391400A
Cited
US2474742A
Cited
US2476071A
Cited
US2465039A
Cited
US2541398A
Cited
US2558524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |