US3288932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voice-data substation apparatus actuated by tone from central switching office
Assignee: Automatic Electric Laboratories Inc
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Filing: 1963-04-24
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Granted: 1966-11-29
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Expires: 1983-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robert T Cleary
- 👤 Robert V Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:06
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN A COMMUNICATION SYSTEM, A CENTRAL SWITCHING OFFICE INCLUDING SWITCHING MEANS OPERATED IN RESPONSE TO VOICE-FREQUENCY ADDRESS SIGNALS AND MEANS FOR GENERATING AN ACKNOWLEDGEMENT TONE OPERATED IN RESPONSE TO THE RECEIPT OF A VOICE-FREQUENCY ADDRESS, A SUBSTATION INCLUDING VOICE-FREQUENCY SIGNALLING APPARATUS FOR PROVIDING SAID ADDRESS SIGNALS, A NORMALLY DISABLED TRANSMITTER FOR PRO-
Claim 2
Dependent Claim
52 words
IN A COMMUNICATION SYSTEM, A CENTRAL SWITCHING OFFICE INCLUDING SWITCHING MEANS OPERATED IN RESPONSE TO VOICE-FREQUENCY ADDRESS SIGNALS AND MEANS FOR GENERATING AN ACKNOWLEDGEMENT TONE OPERATED IN RESPONSE TO THE RECEIPT OF A VOICE-FREQUENCY ADDRESS, A SUBSTATION INCLUDING VOICE-FREQUENCY SIGNALLING APPARATUS FOR PROVIDING SAID ADDRESS SIGNALS, A NORMALLY DISABLED TRANSMITTER FOR PRO-
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |