Patent US3079464A successfully refreshed from Google Patents.
US3079464A
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Multiplex speech communication system
Assignee: CROSBY LAB Inc
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Filing: 1960-02-10
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Granted: 1963-02-26
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Expires: 1980-02-10
Abstract
No abstract record available.
Inventors
- 👤 Irwin D Baumel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:29
CPC Classifications
H; H04; H04J; H04J1/00; H04J1/02; H04J1/08; H04B; H04B1/00; H04B1/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
APPARATUS FOR MULTIPLEXING SPEECH COMMUNICATION, SAID APPARATUS COMPRISING MEANS TO SUPPLY A PLURALITY OF SPEECH SIGNALS, MEANS TO CHANGE EACH SPEECH SIGNAL TO A MONOTONIC SPEECH SIGNAL COMPRISING A FIXED PREDETERMINED FUNDAMENTAL FREQUENCY AND ITS HARMONICS, MEANS TO SO FIX THE FREQUENCIES OF THE MONOTONIC SIGNALS THAT EACH HAS A STARTING FREQUENCY DIFFERENT FROM THE OTHERS AND HAS HIGHER FREQUENCIES ALSO DIFFERENT FROM THE HIGHER FREQUENCIES OF THE OTHERS, SO THAT THE SPACED FREQUENCIES
Claim 2
Dependent Claim
74 words
APPARATUS FOR MULTIPLEXING SPEECH COMMUNICATION, SAID APPARATUS COMPRISING MEANS TO SUPPLY A PLURALITY OF SPEECH SIGNALS, MEANS TO CHANGE EACH SPEECH SIGNAL TO A MONOTONIC SPEECH SIGNAL COMPRISING A FIXED PREDETERMINED FUNDAMENTAL FREQUENCY AND ITS HARMONICS, MEANS TO SO FIX THE FREQUENCIES OF THE MONOTONIC SIGNALS THAT EACH HAS A STARTING FREQUENCY DIFFERENT FROM THE OTHERS AND HAS HIGHER FREQUENCIES ALSO DIFFERENT FROM THE HIGHER FREQUENCIES OF THE OTHERS, SO THAT THE SPACED FREQUENCIES
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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |