US3011023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency shift keyed signal converter
Assignee: GEN ELECTRONICS LAB Inc
•
Filing: 1957-11-18
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Granted: 1961-11-28
•
Expires: 1977-11-18
Abstract
No abstract record available.
Inventors
- 👤 Lewis S Billig
- 👤 Kenneth C Perkins
- 👤 James K Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:57
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/10; H04L27/14; H04L27/144; H04L27/148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1752325A
Cited
US2118917A
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US2211750A
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US2293501A
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US2397884A
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US2513525A
Cited
US2494309A
Cited
US2555557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |