Patent US3072746A successfully refreshed from Google Patents.
US3072746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic telephone dialing apparatus
Assignee: ELECTRONIC SECRETARY IND Inc
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Filing: 1957-05-01
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Granted: 1963-01-08
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Expires: 1977-05-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Zimmermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:28
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/27; H04M1/274; H04M11/00; H04M11/04; H04M11/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A PROTECTIVE DEVICE TO TRANSMIT IN RESPONSE TO A PREDETERMINED CONDITION A SIGNAL TO A REMOTE TELEPHONE STATION OVER A TELEPHONE LINE SYSTEM EMPLOYING VARIOUS COMBINATIONS OF A PREDETERMINED NUMBER OF CHARACTERS TO IDENTIFY DIFFERENT TELEPHONE STATIONS, A STORAGE MEDIUM HAVING SENSIBLE MARKS CODED TO THE CHARACTERS OF A DISTANT TELEPHONE AND A MESSAGE SUCCESSIVELY CARRIED ON THE STORAGE MEDIUM, SENSING MEANS OPERATIVELY ASSOCIATED WITH THE STORAGE MEDIUM AND ADAPTED TO SUCCESSIVELY REPRODUCE SAID MARKS INTO ELECTRICAL TRIGGERING SIGNALS AND INTO A CORRESPONDING MESSAGE, TELEPHONE LINE LOADING AND TRANSMITTING MEANS CONNECTABLE ACROSS THE TELEPHONE LINE AND TO SAID SENSING MEANS, NORMALLY OPEN SWITCH MEANS CONNECTED IN SERIES WITH SAID LOADING AND TRANSMITTING MEANS ACROSS THE TELEPHONE LINES AND HAVING ELECTROMAGNETIC MEANS FOR OPENING AND CLOSING THE CIRCUIT, AN ENERGIZING CIRCUIT FOR SAID SENSING MEANS, MEANS IN SAID ENERGIZING
Claim 2
Dependent Claim
138 words
A PROTECTIVE DEVICE TO TRANSMIT IN RESPONSE TO A PREDETERMINED CONDITION A SIGNAL TO A REMOTE TELEPHONE STATION OVER A TELEPHONE LINE SYSTEM EMPLOYING VARIOUS COMBINATIONS OF A PREDETERMINED NUMBER OF CHARACTERS TO IDENTIFY DIFFERENT TELEPHONE STATIONS, A STORAGE MEDIUM HAVING SENSIBLE MARKS CODED TO THE CHARACTERS OF A DISTANT TELEPHONE AND A MESSAGE SUCCESSIVELY CARRIED ON THE STORAGE MEDIUM, SENSING MEANS OPERATIVELY ASSOCIATED WITH THE STORAGE MEDIUM AND ADAPTED TO SUCCESSIVELY REPRODUCE SAID MARKS INTO ELECTRICAL TRIGGERING SIGNALS AND INTO A CORRESPONDING MESSAGE, TELEPHONE LINE LOADING AND TRANSMITTING MEANS CONNECTABLE ACROSS THE TELEPHONE LINE AND TO SAID SENSING MEANS, NORMALLY OPEN SWITCH MEANS CONNECTED IN SERIES WITH SAID LOADING AND TRANSMITTING MEANS ACROSS THE TELEPHONE LINES AND HAVING ELECTROMAGNETIC MEANS FOR OPENING AND CLOSING THE CIRCUIT, AN ENERGIZING CIRCUIT FOR SAID SENSING MEANS, MEANS IN SAID ENERGIZING
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |