US2512704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for coupling wide frequency band antennae to transmission lines
Assignee: International Standard Electric Corp
•
Filing: 1945-01-16
•
Granted: 1950-06-27
•
Expires: 1965-01-16
Abstract
No abstract record available.
Inventors
- 👤 Willoughby Eric Osborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:00
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/38; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1842916A
Cited
US1984408A
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GB469245A
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US2274347A
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US2258974A
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US2311364A
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US2401344A
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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) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |