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US2544255A
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Ultra-short wave repeater
Assignee: Societe Francaise Radio Electrique
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Filing: 1947-04-16
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Granted: 1951-03-06
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Expires: 1967-04-16
Abstract
No abstract record available.
Inventors
- 👤 Chireix Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:18
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22506E
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US2415094A
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US2406371A
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US2287533A
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US2257282A
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US2375223A
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US2401945A
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US2303444A
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US2425738A
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US2369268A
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US2421394A
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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) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |