US2689302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zero drag vertical "i" antenna
Assignee: Individual
•
Filing: 1950-06-20
•
Granted: 1954-09-14
•
Expires: 1970-06-20
Abstract
No abstract record available.
Inventors
- 👤 John A Albano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:43
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/286
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2235506A
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US2269821A
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US2468751A
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US2414266A
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US2368663A
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US2519603A
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US2480186A
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US2501020A
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US2508085A
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US2549143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |