US2493347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-voltage circuit breaker for distribution lines
Assignee: Individual
•
Filing: 1943-09-15
•
Granted: 1950-01-03
•
Expires: 1963-09-15
Abstract
No abstract record available.
Inventors
- 👤 George L Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:52
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1809275A
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US1909234A
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US1937409A
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US2024216A
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US2082028A
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US2167665A
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US2046701A
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US2159884A
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US2324044A
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US2223975A
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US2325555A
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US2315618A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |