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Patent US2702347A successfully refreshed from Google Patents.
US2702347A
Expired / Lapsed
US
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Broad-band antenna
Assignee: Zenith Electronics LLC
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Filing: 1954-01-27
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Granted: 1955-02-15
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Expires: 1974-01-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Spindler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:31
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/26; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q5/00; H01Q5/30; H01Q5/307; H01Q5/342; H01Q5/357
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) | 1958-02-14 | 1958-08-16 | 1959-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-14 | 1962-08-16 | 1963-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-14 | 1966-08-16 | 1967-02-15 | $7700.00 | Window Closed / Lapsed |