US2453555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas blast circuit breaker
Assignee: BBC Brown Boveri AG Germany
•
Filing: 1945-03-12
•
Granted: 1948-11-09
•
Expires: 1965-03-12
Abstract
No abstract record available.
Inventors
- 👤 Thommen Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:51
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190021449A
Cited
US1837812A
Cited
US2084979A
Cited
US1944402A
Cited
US2117261A
Cited
US2279536A
Cited
USRE22298E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |