US3452303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bandpass network having a high attenuation rejection characteristic
Assignee: Thomas International Corp
•
Filing: 1965-07-20
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Granted: 1969-06-24
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Expires: 1985-07-20
Abstract
No abstract record available.
Inventors
- 👤 Leonard V Babcock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:54
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/646; H03; H03H; H03H7/00; H03H7/01; H03H7/09; H03H7/17; H03H7/1741; H03H7/1758; H03H7/1791
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2183741A
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US2907960A
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US3114889A
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US3074026A
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US3217096A
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US3358246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |