US2662138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter housing
Assignee: S&C Electric Co
•
Filing: 1951-03-30
•
Granted: 1953-12-08
•
Expires: 1971-03-30
Abstract
No abstract record available.
Inventors
- 👤 Sigurd I Lindell
- 👤 Charles H Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:19
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/76; H01H85/00; H01H85/02; H01H85/38; H01H85/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2073565A
Cited
US2309013A
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US2325416A
Cited
US2319277A
Cited
US2328825A
Cited
US2567236A
Cited
US2567768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |