Patent US3023277A successfully refreshed from Google Patents.
US3023277A
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Reduction of sampling rate in pulse code transmission
Assignee: AT&T Inc
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Filing: 1957-09-19
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Granted: 1962-02-27
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Expires: 1977-09-19
Abstract
No abstract record available.
Inventors
- 👤 Max V Mathews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:53
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/66; G; G06; G06F; G06F17/00; G06F17/10; G06F17/17; G10; G10L; G10L25/00; G10L25/03; G10L25/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2098956A
Cited
US2448718A
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US2676202A
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US2726283A
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US2784256A
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US2890285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |