US2522370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency coupling device
Assignee: Radio Patents Corp
•
Filing: 1946-11-02
•
Granted: 1950-09-12
•
Expires: 1966-11-02
Abstract
No abstract record available.
Inventors
- 👤 Guanella Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:26
CPC Classifications
H; H03; H03H; H03H5/00; H03H5/006; H01; H01F; H01F21/00; H01F21/005; H03H2/00; H03H2/005; H03H5/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2299571A
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US1517570A
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US1850914A
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US1893618A
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US1904199A
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US2158493A
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US2227846A
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US2115826A
Cited
US2232042A
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GB519506A
Cited
US2258261A
Cited
US2465102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |