US2500429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric gas blast circuit breaker
Assignee: Individual
•
Filing: 1946-02-15
•
Granted: 1950-03-14
•
Expires: 1966-02-15
Abstract
No abstract record available.
Inventors
- 👤 Nijland Hendrik A Hidde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:50
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/80; H01H33/82; H01H33/83
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1898900A
Cited
US2125525A
Cited
US2163558A
Cited
GB510502A
Cited
US2240233A
Cited
US2279536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |