Patent US2500329A successfully refreshed from Google Patents.
Patent US2794174A successfully refreshed from Google Patents.
US2794174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave transmission systems and impedance matching devices therefor
Assignee: TDK Micronas GmbH
•
Filing: 1952-05-08
•
Granted: 1957-05-28
•
Expires: 1972-05-08
Abstract
No abstract record available.
Inventors
- 👤 Arditi Maurice
- 👤 Georges A Deschamps
- 👤 Elefant Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:29
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/02; H03L7/04; B; B07; B07C; B07C3/00; B07C3/003; B07C3/006; H01; H01P; H01P3/00; H01P3/02; H01P3/08; H01P3/081; H01P5/00; H01P5/02; H01P5/08; H01P5/085; H01P5/10; H01P5/107; H01P5/12; H01P5/16; H01P5/18; H01P5/184; H01P5/187
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE23131E
Cited
US2563612A
Cited
US2238438A
Cited
US2411555A
Cited
US2344884A
Cited
US2424982A
Cited
US2562281A
Cited
US2540488A
Cited
US2602856A
Cited
GB655803A
Cited
US2734170A
Cited
US2721312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |