US2903894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the transmission and reception of radio signals on a large number of regularly spaced frequencies
Assignee: Individual
•
Filing: 1955-01-19
•
Granted: 1959-09-15
•
Expires: 1975-01-19
Abstract
No abstract record available.
Inventors
- 👤 Legros Robert Guy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:38
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/02; H04B1/03; H04B1/034; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19079; Y10T74/19088; Y10T74/19098; Y10T74/19642; Y10T74/19698; Y10T74/19828
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US92678A
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US1387636A
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FR857020A
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US2273602A
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US2378941A
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US2521070A
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US2568412A
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US2581594A
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US2595608A
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US2567585A
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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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |