US2943173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit-breaker, and especially a combined circuit-breaker isolating-switch device
Assignee: Individual
•
Filing: 1958-02-27
•
Granted: 1960-06-28
•
Expires: 1978-02-27
Abstract
No abstract record available.
Inventors
- 👤 Bertrand P E Level
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:42
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/30; H01H33/00; H01H33/02; H01H33/28; H01H33/30; H01H33/34; H01H33/70; H01H33/7015; H01H33/7038; H01H33/88; H01H33/90; H01H33/92
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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |