Patent US2673271A successfully refreshed from Google Patents.
US2673271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric circuit-breaker of the gas-blast type
Assignee: A Reyrolle and Co Ltd
•
Filing: 1949-04-01
•
Granted: 1954-03-23
•
Expires: 1969-04-01
Abstract
No abstract record available.
Inventors
- 👤 Amer Donald Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:31
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/53; H01H33/56
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1375983A
Cited
US1937482A
Cited
US2280321A
Cited
US2382274A
Cited
US2500429A
Cited
US2367934A
Cited
US2392647A
Cited
US2531617A
Cited
US2459600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |