Patent US2159376A successfully refreshed from Google Patents.
US3553701A
Expired / Lapsed
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Log periodic rotating antenna
Assignee: CHALLENGER ELECTRIC MATERIALS Inc
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Filing: 1968-05-27
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Granted: 1971-01-05
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Expires: 1988-05-27
Abstract
Abstract A ROTATABLE ANTENNA STRUCTURE INCLUDES A RADIATING ARRAY SUPPORTED IN A PLANE ABOVE A SUPPORT CONSTRUCTION COMPRISING BOOMS AND CABLES.
Inventors
- 👤 Maxime J Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:46
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/02; H01Q3/04; H01Q1/00; H01Q1/12; H01Q1/1242; H01Q11/00; H01Q11/02; H01Q11/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |