US2714192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
U. h. f. band pass filter structures
Assignee: RCA Corp
•
Filing: 1951-07-02
•
Granted: 1955-07-26
•
Expires: 1971-07-02
Abstract
No abstract record available.
Inventors
- 👤 Pan Wen Yuan
- 👤 David J Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:57
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/0153; H03H7/0161
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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DE542364C
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US2014422A
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US2052703A
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GB454845A
Cited
US2075956A
Cited
US2383463A
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GB541712A
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US2440269A
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US2589092A
Cited
US2514337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-25 | 1959-01-24 | 1959-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-25 | 1963-01-24 | 1963-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-25 | 1967-01-24 | 1967-07-26 | $7700.00 | Window Closed / Lapsed |