US2859417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave filters
Assignee: TDK Micronas GmbH
•
Filing: 1952-12-06
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Granted: 1958-11-04
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Expires: 1972-12-06
Abstract
No abstract record available.
Inventors
- 👤 Arditi Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:31
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/02; H03L7/04; B; B07; B07C; B07C3/00; B07C3/003; B07C3/006; H01; H01P; H01P1/00; H01P1/18; H01P1/184; H01P1/20; H01P1/201; H01P1/203; H01P1/20327; H01P1/20354; H01P1/20363; H01P1/20381; H01P1/207; H01P1/209; H01P3/00; H01P3/02; H01P3/08; H01P3/085; H01P5/00; H01P5/02; H01P5/08; H01P5/10; H01P5/107; H01P5/12; H01P5/16; H01P5/18; H01P5/184; H01P5/187; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/247; H01Q9/00; H01Q9/04; H01Q9/06; H01Q9/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2274346A
Cited
US2402540A
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US2411555A
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GB655803A
Cited
US2760169A
Cited
US2721312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |