Patent US1872530A successfully refreshed from Google Patents.
US1872530A
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US
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High tension circuit interrupter
Assignee: General Electric Co
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Filing: 1930-11-25
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Granted: 1932-08-16
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Expires: 1950-11-25
Abstract
No abstract record available.
Inventors
- 👤 William H Turnpenny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:17
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/98
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-08-16 | 1936-02-15 | 1936-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-08-16 | 1940-02-15 | 1940-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-08-16 | 1944-02-15 | 1944-08-16 | $7700.00 | Window Closed / Lapsed |