US3087998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio telephone system
Assignee: Motorola Solutions Inc
•
Filing: 1958-01-17
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Granted: 1963-04-30
•
Expires: 1978-01-17
Abstract
No abstract record available.
Inventors
- 👤 Stewart James Russell
- 👤 Charles H Willyard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:17
CPC Classifications
H; H04; H04W; H04W84/00; H04W84/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A TELEPHONE SYSTEM FOR PROVIDING AUTOMATIC OPERATION BETWEEN A DIAL TELEPHONE EXCHANGE AND REMOTE RADIOCONNECTED STATIONS, AND IN WHICH THE EXCHANGE RESPONDS TO DIAL PULSES TO CONNECT THE REMOTE STATIONS TO SELECTED STATIONS, SAID SYSTEM INCLUDING IN COMBINATION, APPARATUS AT EACH REMOTE STATION INCLUDING RADIO TRANSMITTING AND RECEIVING MEANS, MEANS PRODUCING FOUR TONES OF DIFFERENT FREQUENCIES, AND PUSH-BUTTON SELECTING MEANS WHICH SELECTS TWO OF SAID TONES FOR EACH DIGIT OF A CALLED NUMBER AND APPLIES THE SAME IN A PREDETERMINED ORDER TO THE RADIO TRANSMITTING MEANS, AND APPARATUS AT THE EXCHANGE INCLUDING RADIO TRANSMITTING AND RECEIVING MEANS, DECODING MEANS PRODUCING CONTROL VOLTAGES IN RESPONSE TO THE TONES RECEIVED, MEMORY MEANS INCLUDING A FIRST BANK OF NEON BULBS RESPONSIVE TO SAID CONTROL VOLTAGE FOR REGISTERING A DIGIT, RELAY MEANS RESPONSIVE TO SAID CONTROL VOLTAGES
Claim 2
Dependent Claim
133 words
A TELEPHONE SYSTEM FOR PROVIDING AUTOMATIC OPERATION BETWEEN A DIAL TELEPHONE EXCHANGE AND REMOTE RADIOCONNECTED STATIONS, AND IN WHICH THE EXCHANGE RESPONDS TO DIAL PULSES TO CONNECT THE REMOTE STATIONS TO SELECTED STATIONS, SAID SYSTEM INCLUDING IN COMBINATION, APPARATUS AT EACH REMOTE STATION INCLUDING RADIO TRANSMITTING AND RECEIVING MEANS, MEANS PRODUCING FOUR TONES OF DIFFERENT FREQUENCIES, AND PUSH-BUTTON SELECTING MEANS WHICH SELECTS TWO OF SAID TONES FOR EACH DIGIT OF A CALLED NUMBER AND APPLIES THE SAME IN A PREDETERMINED ORDER TO THE RADIO TRANSMITTING MEANS, AND APPARATUS AT THE EXCHANGE INCLUDING RADIO TRANSMITTING AND RECEIVING MEANS, DECODING MEANS PRODUCING CONTROL VOLTAGES IN RESPONSE TO THE TONES RECEIVED, MEMORY MEANS INCLUDING A FIRST BANK OF NEON BULBS RESPONSIVE TO SAID CONTROL VOLTAGE FOR REGISTERING A DIGIT, RELAY MEANS RESPONSIVE TO SAID CONTROL VOLTAGES
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |