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US2723367A
Expired / Lapsed
US
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Over-voltage protecting device
Assignee: ABB Norden Holding AB
•
Filing: 1951-12-01
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Granted: 1955-11-08
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Expires: 1971-12-01
Abstract
No abstract record available.
Inventors
- 👤 Bockman Oluf Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:33
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE207769C
Cited
US306697A
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US455955A
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US860157A
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US1651872A
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US2006179A
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US2079723A
Cited
US2224749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |