US3146310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus for telephone answering system
Assignee: Individual
•
Filing: 1960-08-15
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Granted: 1964-08-25
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Expires: 1980-08-15
Abstract
No abstract record available.
Inventors
- 👤 Jeffries Robert
- 👤 Robert L Provencal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:09
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/64; H04M1/65; H04M1/652
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A TELEPHONE CONTROL APPARTUS FOR USE WITH CENTRAL STATION EQUIPMENT WHICH PRODUCES A VOLTAGE CHANGE ON A TELEPHONE LINE WHEN THE LINE IS LOADED AT THE SUBSCRIBER''S END, THE COMBINATION OF: A FIRST TELEPHONE LINE; A SECOND TELEPHONE LINE; A FIRST SWITCH ACTUATED BY SAID VOLTAGE CHANGE ON SAID FIRST LINE; A SECOND SWITCH ACTUATED BY A RINGING SIGNAL ON SAID FIRST LINE AND BY SAID FIRST SWITCH; A FIRST RECORD PLAYER HAVING AN AUDIO COUPLED TO SAID FIRST LINE; A SECOND RECORD PLAYER AND RECORDER HAVING AN AUDIO INPUT COUPLED TO SAID FIRST LINE AND AN AUDIO OUTPUT COUPLED TO SAID SECOND LINE; A THIRD SWITCH FOR LOADING EACH OF SAID LINES; A FOURTH SWITCH ACTUATED BY SAID SECOND SWITCH FOR ACTUATING SAID THIRD SWITCH AND SAID FIRST RECORD
Claim 2
Dependent Claim
131 words
IN A TELEPHONE CONTROL APPARTUS FOR USE WITH CENTRAL STATION EQUIPMENT WHICH PRODUCES A VOLTAGE CHANGE ON A TELEPHONE LINE WHEN THE LINE IS LOADED AT THE SUBSCRIBER''S END, THE COMBINATION OF: A FIRST TELEPHONE LINE; A SECOND TELEPHONE LINE; A FIRST SWITCH ACTUATED BY SAID VOLTAGE CHANGE ON SAID FIRST LINE; A SECOND SWITCH ACTUATED BY A RINGING SIGNAL ON SAID FIRST LINE AND BY SAID FIRST SWITCH; A FIRST RECORD PLAYER HAVING AN AUDIO COUPLED TO SAID FIRST LINE; A SECOND RECORD PLAYER AND RECORDER HAVING AN AUDIO INPUT COUPLED TO SAID FIRST LINE AND AN AUDIO OUTPUT COUPLED TO SAID SECOND LINE; A THIRD SWITCH FOR LOADING EACH OF SAID LINES; A FOURTH SWITCH ACTUATED BY SAID SECOND SWITCH FOR ACTUATING SAID THIRD SWITCH AND SAID FIRST RECORD
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |