US3484693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency shifted sliding tone sampled data communication system
Assignee: General Electric Co
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Filing: 1966-01-03
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Granted: 1969-12-16
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Kouan Fong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:39
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/002; H04B14/02; H04J; H04J99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |