Patent US3434008A successfully refreshed from Google Patents.
Patent US3113176A successfully refreshed from Google Patents.
US3113176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teletypewriter subscriber set
Assignee: AT&T Inc
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Filing: 1961-09-29
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Granted: 1963-12-03
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Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 Theodore L Doktor
- 👤 Parker George
- 👤 Laurance A Weber
- 👤 Herbert M Zydney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:11
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A DATA TRANSMISSION SYSTEM INCLUDING A TWO-WAY TRANSMISSION CHANNEL CAPABLE OF CONVEYING RINGING AND DATA SIGNALS, SIGNALING MEANS FOR APPLYING SIGNALS TO SAID CHANNEL, RECEIVING MEANS RESPONSIVE TO DATA SIGNALS FROM SAID CHANNEL, INVERTER MEANS RESPONSIVE TO SAID RECEIVING MEANS, TIMING MEANS OPERABLE A PREDETERMINED INTERVAL AFTER ENERGIZATION THEREOF, OPERABLE MEANS RESPONSIVE TO THE RECEPTION OF RINGING SIGNALS FROM SAID CHANNEL FOR ENERGIZING SAID TIMING MEANS IN A FIRST INSTANCE, MEANS RESPONSIVE TO SAID OPERATION OF SAID TIMING MEANS IN SAID FIRST INSTANCE FOR OPERATING SAID SIGNALING MEANS AND RENDERING SAID TIMING MEANS RESPONSIVE TO SAID RECEIVING MEANS IN A SECOND INSTANCE, AND MEANS RESPONSIVE TO SAID OPERATION OF SAID TIMING MEANS IN SAID SECOND INSTANCE FOR RENDERING SAID TIMING MEANS RESPONSIVE TO SAID INVERTER MEANS IN A THIRD INSTANCE.
Claim 2
Dependent Claim
131 words
IN A DATA TRANSMISSION SYSTEM INCLUDING A TWO-WAY TRANSMISSION CHANNEL CAPABLE OF CONVEYING RINGING AND DATA SIGNALS, SIGNALING MEANS FOR APPLYING SIGNALS TO SAID CHANNEL, RECEIVING MEANS RESPONSIVE TO DATA SIGNALS FROM SAID CHANNEL, INVERTER MEANS RESPONSIVE TO SAID RECEIVING MEANS, TIMING MEANS OPERABLE A PREDETERMINED INTERVAL AFTER ENERGIZATION THEREOF, OPERABLE MEANS RESPONSIVE TO THE RECEPTION OF RINGING SIGNALS FROM SAID CHANNEL FOR ENERGIZING SAID TIMING MEANS IN A FIRST INSTANCE, MEANS RESPONSIVE TO SAID OPERATION OF SAID TIMING MEANS IN SAID FIRST INSTANCE FOR OPERATING SAID SIGNALING MEANS AND RENDERING SAID TIMING MEANS RESPONSIVE TO SAID RECEIVING MEANS IN A SECOND INSTANCE, AND MEANS RESPONSIVE TO SAID OPERATION OF SAID TIMING MEANS IN SAID SECOND INSTANCE FOR RENDERING SAID TIMING MEANS RESPONSIVE TO SAID INVERTER MEANS IN A THIRD INSTANCE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |