US2844689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Wadsworth Electric Manufacturing Co
•
Filing: 1956-06-21
•
Granted: 1958-07-22
•
Expires: 1976-06-21
Abstract
No abstract record available.
Inventors
- 👤 William H Middendorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:50
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/50; H01H71/505; H01H73/00; H01H73/02; H01H73/18; H01H71/52; H01H71/522; H01H71/523
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) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |