US2658170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hv type key interlock
Assignee: ITE Circuit Breaker Co
•
Filing: 1950-09-19
•
Granted: 1953-11-03
•
Expires: 1970-09-19
Abstract
No abstract record available.
Inventors
- 👤 Arthur S Caswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:38
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/46; H01H33/48; H02; H02B; H02B11/00; H02B11/12; H02B11/167
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US667341A
Cited
US1264162A
Cited
US1810694A
Cited
US1729864A
Cited
US1914670A
Cited
US1877747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |