US2866595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra-high frequency band separating filters
Assignee: Individual
•
Filing: 1957-02-26
•
Granted: 1958-12-30
•
Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 Marie Georges Robert Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:28
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2562281A
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US2558385A
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US2651759A
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US2626990A
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US2585173A
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US2748350A
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US2783439A
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US2730677A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |