US2711519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead-in system for rotatable antennas
Assignee: CHARLES S VRTIS
•
Filing: 1951-06-07
•
Granted: 1955-06-21
•
Expires: 1971-06-07
Abstract
No abstract record available.
Inventors
- 👤 Edward L Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:05
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/02; H01Q3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1219247A
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US1534271A
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US1699392A
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US2359351A
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US2395899A
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US2451959A
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US2557074A
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US2570784A
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US2565334A
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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) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |