US3242267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voice-frequency signal receiver with speech-immunity circuit
Assignee: International Standard Electric Corp
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Filing: 1962-11-13
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Granted: 1966-03-22
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Beyerle Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:12
CPC Classifications
H; H04; H04Q; H04Q1/00; H04Q1/18; H04Q1/30; H04Q1/44; H04Q1/444; H04Q1/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A VOICE FREQUENCY SIGNALLING SYSTEM COMPRISING MEANS FOR RECEIVING VOICE FREQUENCY SIGNALS THAT INCLUDE SPEECH SIGNALS AND CONTROL SIGNALS, SAID CONTROL SIGNALS EMPLOYING A PRE-DETERMINED PORTION OF THE ENTIRE VOICE FREQUENCY RANGE, SAID RECEIVING MEANS COMPRISING SELECTIVE CIRCUIT MEANS INCLUDING SERIES-RESONANT CIRCUIT MEANS COMPRISING MUTUAL INDUCTANCE FOR SEPARATING SAID CONTROL SIGNAL FROM SAID SPEECH SIGNALS, TRIGGER MEANS HAVING A NORMAL CONDITION AND AN OPERATED CONDITION, TRIGGER CONTROL MEANS INDUCTIVELY COUPLED TO SAID SELECTIVE CIRCUIT MEANS RESPONSIVE TO SAID RECEIVED VOICE FREQUENCY SIGNALS INCLUDING CONTROL SIGNALS, AND SUMMING MEANS INCLUDED IN SAID TRIGGER CONTROL MEANS ACTING RESPONSIVE TO SAID RECEIVED VOICE FREQUENCY SIGNALS INCLUDING ONLY CONTROL SIGNALS FOR OPERATING SAID TRIGGER MEANS TO SAID OPERATED CONDITION AND ACTING RESPONSIVE TO SAID RECEIVED VOICE FREQUENCY SIGNALS INCLUDING SPEECH SIGNALS FOR BLOCKING SAID TRIGGER CONTROL MEANS TO OPERATE SAID TRIGGER MEANS TO SAID NORMAL CONDITION.
Claim 2
Dependent Claim
142 words
A VOICE FREQUENCY SIGNALLING SYSTEM COMPRISING MEANS FOR RECEIVING VOICE FREQUENCY SIGNALS THAT INCLUDE SPEECH SIGNALS AND CONTROL SIGNALS, SAID CONTROL SIGNALS EMPLOYING A PRE-DETERMINED PORTION OF THE ENTIRE VOICE FREQUENCY RANGE, SAID RECEIVING MEANS COMPRISING SELECTIVE CIRCUIT MEANS INCLUDING SERIES-RESONANT CIRCUIT MEANS COMPRISING MUTUAL INDUCTANCE FOR SEPARATING SAID CONTROL SIGNAL FROM SAID SPEECH SIGNALS, TRIGGER MEANS HAVING A NORMAL CONDITION AND AN OPERATED CONDITION, TRIGGER CONTROL MEANS INDUCTIVELY COUPLED TO SAID SELECTIVE CIRCUIT MEANS RESPONSIVE TO SAID RECEIVED VOICE FREQUENCY SIGNALS INCLUDING CONTROL SIGNALS, AND SUMMING MEANS INCLUDED IN SAID TRIGGER CONTROL MEANS ACTING RESPONSIVE TO SAID RECEIVED VOICE FREQUENCY SIGNALS INCLUDING ONLY CONTROL SIGNALS FOR OPERATING SAID TRIGGER MEANS TO SAID OPERATED CONDITION AND ACTING RESPONSIVE TO SAID RECEIVED VOICE FREQUENCY SIGNALS INCLUDING SPEECH SIGNALS FOR BLOCKING SAID TRIGGER CONTROL MEANS TO OPERATE SAID TRIGGER MEANS TO SAID NORMAL CONDITION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |