US3179742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic message identification circuit for telegraph machines
Assignee: AT&T Teletype Corp
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Filing: 1962-05-01
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Granted: 1965-04-20
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Expires: 1982-05-01
Abstract
No abstract record available.
Inventors
- 👤 Gordon C Meyers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:31
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN A TRANSMITTING APPARATUS FOR TRANSMITTING MESSAGES HAVING PRECEDING INDENTIFYING SIGNALS, INFORMATION SIGNALS, AND SUCCEEDING END-OF-MESSAGE SIGNALS; A FIRST SIGNAL GENERATOR FOR GENERATING INFORMATION SIGNALS; A SWITCH OPERATED INS REPSONSE TO THE PRESENCE OF INFORMATION IN THE FIRST SIGNAL GENERATOR; A SECOND SIGNAL GENERATOR FOR GENERATING PRECEDING IDENTIFYING SIGNALS AND SUCCEEDING ENDOF-MESSAGE SIGNALS; A START MESSAGE TRANSMISSION CONTACT; MEANS RESPONSIVE TO THE OPERATION OF THE START MESSAGE TRANSMISSION CONTACT AND THE OPERATION OF THE INFORMATION PRESENCE SWITCH FOR INITIATING OPERATION OF THE SECOND SIGNAL GENERATOR; MEANS CONTROLLED BY THE OPERATION OF THE SECOND SIGNAL GENERATOR AND RESPONSIVE TO THE OUTPUT THEREOF FOR TRANSMITTING, IN SEQUENCE, THE IDENTIFYING SIGNALS; MEANS CONTROLLED BY THE SECOND SIGNAL GENERATOR AT THE TERMINATION OF TRANSMISSION OF THE IDENTIFYING SIGNALS FOR INITIATING OPERATION OF THE FIRST SIGNAL GENERATOR AND FOR TRANSFERRING CONTROL OF THE TRANSMISSION MEANS FROM THE SECOND SIGNAL GENERATOR TO THE FIRST SIGNAL GENERATOR, THE SECOND SIGNAL GENERATOR SUSPENDING OPERATION; TIMING CON-
Claim 2
Dependent Claim
158 words
IN A TRANSMITTING APPARATUS FOR TRANSMITTING MESSAGES HAVING PRECEDING INDENTIFYING SIGNALS, INFORMATION SIGNALS, AND SUCCEEDING END-OF-MESSAGE SIGNALS; A FIRST SIGNAL GENERATOR FOR GENERATING INFORMATION SIGNALS; A SWITCH OPERATED INS REPSONSE TO THE PRESENCE OF INFORMATION IN THE FIRST SIGNAL GENERATOR; A SECOND SIGNAL GENERATOR FOR GENERATING PRECEDING IDENTIFYING SIGNALS AND SUCCEEDING ENDOF-MESSAGE SIGNALS; A START MESSAGE TRANSMISSION CONTACT; MEANS RESPONSIVE TO THE OPERATION OF THE START MESSAGE TRANSMISSION CONTACT AND THE OPERATION OF THE INFORMATION PRESENCE SWITCH FOR INITIATING OPERATION OF THE SECOND SIGNAL GENERATOR; MEANS CONTROLLED BY THE OPERATION OF THE SECOND SIGNAL GENERATOR AND RESPONSIVE TO THE OUTPUT THEREOF FOR TRANSMITTING, IN SEQUENCE, THE IDENTIFYING SIGNALS; MEANS CONTROLLED BY THE SECOND SIGNAL GENERATOR AT THE TERMINATION OF TRANSMISSION OF THE IDENTIFYING SIGNALS FOR INITIATING OPERATION OF THE FIRST SIGNAL GENERATOR AND FOR TRANSFERRING CONTROL OF THE TRANSMISSION MEANS FROM THE SECOND SIGNAL GENERATOR TO THE FIRST SIGNAL GENERATOR, THE SECOND SIGNAL GENERATOR SUSPENDING OPERATION; TIMING CON-
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |