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US2512945A
Expired / Lapsed
US
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Radio-frequency transmission line section
Assignee: Individual
•
Filing: 1946-06-28
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Granted: 1950-06-27
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Expires: 1966-06-28
Abstract
No abstract record available.
Inventors
- 👤 Heinz E Kallmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:38
CPC Classifications
H; H03; H03H; H03H5/00; H03H5/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1715319A
Cited
US1563731A
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US2134794A
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US2226728A
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US2474988A
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US2403349A
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US2416683A
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US2413609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |