Patent US2373587A successfully refreshed from Google Patents.
Patent US3087019A successfully refreshed from Google Patents.
US3087019A
Expired / Lapsed
US
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Terminal per station identification circuit
Assignee: Automatic Electric Laboratories Inc
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Filing: 1960-03-30
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Granted: 1963-04-23
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Expires: 1980-03-30
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Faulkner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:38
CPC Classifications
H; H04; H04Q; H04Q5/00; H04M; H04M15/00; H04M15/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A TELEPHONE SYSTEM, A SUBSCRIBER STATION IDENTIFIED BY A MULTI-DIGIT DESIGNATION, A FIRST AND A SECOND MULTIELECTRODE GAS FILLED TUBE INDIVIDUAL TO SAID STATION, A STATION MARKING CONDUCTOR CONNECTED TO ONE ELECTRODE OF SAID FIRST TUBE, A LINE MARKING CONDUCTOR CONNECTED TO ONE OF SAID ELECTRODES OF EACH OF SAID TUBES, A PLURALITY OF RESISTORS INDIVIDUAL TO SAID STATION CONNECTED TO ANOTHER OF SAID ELECTRODES OF SAID SECOND TUBE, A PLURALITY OF CODING AMPLIFIERS, ONE TERMINAL OF EACH OF SAID PLURALITY OF RESISTORS CONNECTED TO ONE OF EACH OF SAID PLURALITY OF CODING AMPLIFIERS, A PLURAL DIGIT REGISTER, SWITCHING MEANS CONTROLLED IN RESPONSE TO A CALL FROM SAID STATION FOR CONNECTING SAID STATION TO SAID REGISTER, A SOURCE OF PO-
Claim 2
Dependent Claim
121 words
IN A TELEPHONE SYSTEM, A SUBSCRIBER STATION IDENTIFIED BY A MULTI-DIGIT DESIGNATION, A FIRST AND A SECOND MULTIELECTRODE GAS FILLED TUBE INDIVIDUAL TO SAID STATION, A STATION MARKING CONDUCTOR CONNECTED TO ONE ELECTRODE OF SAID FIRST TUBE, A LINE MARKING CONDUCTOR CONNECTED TO ONE OF SAID ELECTRODES OF EACH OF SAID TUBES, A PLURALITY OF RESISTORS INDIVIDUAL TO SAID STATION CONNECTED TO ANOTHER OF SAID ELECTRODES OF SAID SECOND TUBE, A PLURALITY OF CODING AMPLIFIERS, ONE TERMINAL OF EACH OF SAID PLURALITY OF RESISTORS CONNECTED TO ONE OF EACH OF SAID PLURALITY OF CODING AMPLIFIERS, A PLURAL DIGIT REGISTER, SWITCHING MEANS CONTROLLED IN RESPONSE TO A CALL FROM SAID STATION FOR CONNECTING SAID STATION TO SAID REGISTER, A SOURCE OF PO-
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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |