Patent US2804494A successfully refreshed from Google Patents.
US2804494A
Expired / Lapsed
US
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High frequency transmission cable
Assignee: Individual
•
Filing: 1953-04-08
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Granted: 1957-08-27
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Expires: 1973-04-08
Abstract
No abstract record available.
Inventors
- 👤 Charles F Fenton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:06
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/02; H01P3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US475648A
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US483285A
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US759981A
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US1904547A
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DE644243C
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US2118907A
Cited
US2462887A
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US2648720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |