Patent US2525527A successfully refreshed from Google Patents.
US2525527A
Expired / Lapsed
US
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Ring main distribution protection system
Assignee: Individual
•
Filing: 1945-06-28
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Granted: 1950-10-10
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Expires: 1965-06-28
Abstract
No abstract record available.
Inventors
- 👤 Dannenberg Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:26
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/26; H02H7/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE14881E
Cited
US1294621A
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US1532004A
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US1887695A
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US2330690A
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US2337837A
Cited
US2319279A
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US2303581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |