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Patent US3392238A successfully refreshed from Google Patents.
US3392238A
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Am phase-modulated polybinary data transmission system
Assignee: Automatic Electric Laboratories Inc
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Filing: 1964-02-13
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Granted: 1968-07-09
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Expires: 1984-02-13
Abstract
No abstract record available.
Inventors
- 👤 Lender Adam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:35
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04L25/497; H04L27/00; H04L27/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3069657A
Cited
US3128343A
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US3215779A
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US3157741A
Cited
US3204029A
Cited
US3223929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |