Patent US5069773A successfully refreshed from Google Patents.
Patent US3158693A successfully refreshed from Google Patents.
US3158693A
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Speech interpolation communication system
Assignee: AT&T Inc
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Filing: 1962-08-07
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Granted: 1964-11-24
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Expires: 1982-08-07
Abstract
No abstract record available.
Inventors
- 👤 James L Flanagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:16
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/16; H04J3/1682; H04J3/1688; H04B; H04B1/00; H04B1/66; H04B1/667; H04J3/17
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
APPARATUS FOR RECONSTRUCTING A REPLICA OF A VOICE WAVE WHICH COMPRISES A SOURCE OF A REDUCED BANDWIDTH SIGNAL COMPRISING SELECTED LOW-FREQUENCY PORTIONS OF THE ENERGY BURSTS OF A VOICE WAVE SEPARATED BY SELECTED HIGH-FREQUENCY PORTIONS OF SAID ENERGY BURSTS, EACH OF SAID LOWFREQUENCY PORTIONS BEING FOLLOWED BY THE HIGH-FREQUENCY PORTION OF THE SAME ENERGY BURST, MEANS FOR DELAYING EACH OF SAID LOW-FREQUENCY PORTIONS OF SAID REDUCED BANDWIDTH SIGNAL FOR A PREASSIGNED LENGTH OF TIME, SYNCHRONIZING MEANS FOR BRINGING THE HIGH-FREQUENCY PORTION OF EACH ENERGY BURST INTO TIME-COINCIDENCE WITH THE DELAYED LOW-FREQUENCY PORTION OF THE SAME ENERGY BURST, AND MEANS FOR COMBINING SAID SYNCHRONIZED LOW-FREQUENCY AND HIGH-FREQUENCY PORTIONS TO RECONSTRUCT A REPLICA OF THE ORIGINAL VOICE WAVE.
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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |