Patent EP0491211A1 successfully refreshed from Google Patents.
US3339141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-tone remote control system
Assignee: ROTHENBUHLER ENG CO
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Filing: 1964-09-11
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Granted: 1967-08-29
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Expires: 1984-09-11
Abstract
No abstract record available.
Inventors
- 👤 Howard E Rothenbuhler
- 👤 Dale A Crowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:50
CPC Classifications
H; H04; H04W; H04W84/00; H04W84/02; H04W84/022; H04W88/00; H04W88/18; H04W88/185; H04W88/188
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN A COMMUNICATION SYSTEM HAVING A TRANSMITTER AND A RECEIVER, CODED SIGNALLING MEANS COMPRISING: OSCILLATOR MEANS CONNECTED FOR SELECTIVELY MODULATING A CARRIER FREQUENCY SIGNAL TRANSMITTED BY THE TRANSMITTER, TIMING MEANS CONNECTED TO THE OSCILLATOR MEANS FOR CHANGING THE OUTPUT THEREOF TO A DIFFERENT MODULATING FREQUENCY AFTER ELAPSE OF AN INITIAL PERIOD OF LIMITED DURATION, PAGING MEANS OPERATIVELY CONNECTED TO THE OSCILLATOR MEANS AND THER TIMING MEANS FOR SELECTIVELY INITIATING OPERATION OF THE OSCILLAROT MEANS AT THE BEGINNING OF SAID INITIAL PERIOD OF LIMITED DURATION, DECODING MEANS OPERATIVELY CONNECTED TO SAID RECEIVER FOR SEQUENTIALLY RESPONDING TO SAID MODULATING FREQUENCIES OF THE OSCILLATOR MEANS, RESET MEANS OPERATIVELY CONNECTED TO THE DECODING MEANS FOR RESTRICTING OPERATION THEREOF TO AN INITIAL RECEPTION PERIOD IN RESPONSE TO A SIGNAL AT ONE OF SAID MODULATING FREQUENCIES, AND UTILIZATION CIRCUIT MEANS OPERATIVELY CONNECTED TO THE DECODING MEANS FOR ENERGIZATION IN RESPONSE TO A SIGNAL AT THE OTHER OF SAID MODULATING FREQUENCIES ONLY DURING SAID INITIAL RECEPTION PERIOD,
Claim 2
Dependent Claim
160 words
IN A COMMUNICATION SYSTEM HAVING A TRANSMITTER AND A RECEIVER, CODED SIGNALLING MEANS COMPRISING: OSCILLATOR MEANS CONNECTED FOR SELECTIVELY MODULATING A CARRIER FREQUENCY SIGNAL TRANSMITTED BY THE TRANSMITTER, TIMING MEANS CONNECTED TO THE OSCILLATOR MEANS FOR CHANGING THE OUTPUT THEREOF TO A DIFFERENT MODULATING FREQUENCY AFTER ELAPSE OF AN INITIAL PERIOD OF LIMITED DURATION, PAGING MEANS OPERATIVELY CONNECTED TO THE OSCILLATOR MEANS AND THER TIMING MEANS FOR SELECTIVELY INITIATING OPERATION OF THE OSCILLAROT MEANS AT THE BEGINNING OF SAID INITIAL PERIOD OF LIMITED DURATION, DECODING MEANS OPERATIVELY CONNECTED TO SAID RECEIVER FOR SEQUENTIALLY RESPONDING TO SAID MODULATING FREQUENCIES OF THE OSCILLATOR MEANS, RESET MEANS OPERATIVELY CONNECTED TO THE DECODING MEANS FOR RESTRICTING OPERATION THEREOF TO AN INITIAL RECEPTION PERIOD IN RESPONSE TO A SIGNAL AT ONE OF SAID MODULATING FREQUENCIES, AND UTILIZATION CIRCUIT MEANS OPERATIVELY CONNECTED TO THE DECODING MEANS FOR ENERGIZATION IN RESPONSE TO A SIGNAL AT THE OTHER OF SAID MODULATING FREQUENCIES ONLY DURING SAID INITIAL RECEPTION PERIOD,
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |