Patent US2558085A successfully refreshed from Google Patents.
US2558085A
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Transmission system protection by microwave relaying
Assignee: Westinghouse Electric Corp
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Filing: 1949-01-28
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Granted: 1951-06-26
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Expires: 1969-01-28
Abstract
No abstract record available.
Inventors
- 👤 Edwin L Harder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:49
CPC Classifications
H; H02; H02H; H02H1/00; H02H1/0061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1702423A
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US1987986A
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US1930333A
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US2141896A
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US2255934A
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US2450991A
Cited
US2454009A
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US2472136A
Cited
US2474527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |