US2851557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protecting device for power condensers
Assignee: ABB Norden Holding AB
•
Filing: 1953-06-02
•
Granted: 1958-09-09
•
Expires: 1973-06-02
Abstract
No abstract record available.
Inventors
- 👤 Hansson Bror
- 👤 Bertil C Zetterstedt
- 👤 Thore D Lindholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:33
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/14; H01H; H01H85/00; H01H85/02; H01H85/0241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US497680A
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US871851A
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FR667397A
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US1914871A
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DE723820C
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US2282849A
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DE869987C
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US2550119A
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US2704341A
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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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |