US3518690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boom and feed line construction for multielement antenna
Assignee: GTE Sylvania Inc
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Filing: 1966-12-01
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Granted: 1970-06-30
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Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 William F Schick
- 👤 William R Lavalley
- 👤 Claes T Elfving
- 👤 Marvin L Wahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:14
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/1207; H01Q1/1228; H01Q11/00; H01Q11/02; H01Q11/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |