US2657310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna coupling network
Assignee: Avco Manufacturing Corp
•
Filing: 1950-12-05
•
Granted: 1953-10-27
•
Expires: 1970-12-05
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Runft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:55
CPC Classifications
H; H03; H03H; H03H2/00; H03H2/005; H03H2/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1703171A
Cited
US1901025A
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US1995152A
Cited
US2116696A
Cited
US2223825A
Cited
US2215810A
Cited
US2512481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |