Patent US3077518A successfully refreshed from Google Patents.
US3077518A
Expired / Lapsed
US
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Apparatus for camouflaging communication signals
Assignee: Patelhold Patenverwertungs and Elektro-Holding AG
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Filing: 1959-11-09
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Granted: 1963-02-12
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Expires: 1979-11-09
Abstract
No abstract record available.
Inventors
- 👤 Guanella Gastav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:06
CPC Classifications
H; H04; H04K; H04K1/00; H04K1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
SECRET SIGNALING APPARATUS COMPRISING A FIRST PULSE SERIES MODULATED BY AN INTELLIGENCE SIGNAL, MEANS GENERATING AT A TRANSMITTING STATION A CONTROL PULSE SERIES OF ARBITRARILY VARYING POLARITY, MEANS CONVERTING SAID CONTROL PULSE SERIES INTO AN ADDITIONAL PULSE SERIES AT SAID TRANSMITTING STATION COMPRISING LOGICAL CIRCUIT MEANS WITH OUTPUT PULSES HAVING POLARITIES IN DEPENDENCE UPON THE POLARITIES OF SEVERAL PREVIOUSLY OCCURRING PULSES OF SAID CONTROL PULSE SERIES, MEANS COMBINING SAID FIRST PULSE SERIES WITH SAID ADDITIONAL PULSE SERIES OF VARYING POLARITY AT SAID TRANSMITTING STATION TO FORM A COMPOSITE PULSE SERIES, MEANS FOR TRANSMITTING BOTH SAID CONTROL PULSE SERIES AND SAID COMPOSITE PULSE SERIES FROM SAID TRANSMITTING STATION TO A RECEIVING STATION, MEANS AT SAID RECEIVING STATION IDENTICAL WITH THOSE AT SAID TRANSMITTING STATION FOR PRODUCING A SECOND AND IDENTICAL ADDITIONAL PULSE SERIES, AND MEANS APPLYING SAID SECOND ADDITIONAL PULSE SERIES TO SAID COMPOSITE PULSE SERIES AT SAID RECEIVING STATION TO RECONVERT THE LATTER INTO SAID FIRST PULSE SERIES.
Claim 2
Dependent Claim
158 words
SECRET SIGNALING APPARATUS COMPRISING A FIRST PULSE SERIES MODULATED BY AN INTELLIGENCE SIGNAL, MEANS GENERATING AT A TRANSMITTING STATION A CONTROL PULSE SERIES OF ARBITRARILY VARYING POLARITY, MEANS CONVERTING SAID CONTROL PULSE SERIES INTO AN ADDITIONAL PULSE SERIES AT SAID TRANSMITTING STATION COMPRISING LOGICAL CIRCUIT MEANS WITH OUTPUT PULSES HAVING POLARITIES IN DEPENDENCE UPON THE POLARITIES OF SEVERAL PREVIOUSLY OCCURRING PULSES OF SAID CONTROL PULSE SERIES, MEANS COMBINING SAID FIRST PULSE SERIES WITH SAID ADDITIONAL PULSE SERIES OF VARYING POLARITY AT SAID TRANSMITTING STATION TO FORM A COMPOSITE PULSE SERIES, MEANS FOR TRANSMITTING BOTH SAID CONTROL PULSE SERIES AND SAID COMPOSITE PULSE SERIES FROM SAID TRANSMITTING STATION TO A RECEIVING STATION, MEANS AT SAID RECEIVING STATION IDENTICAL WITH THOSE AT SAID TRANSMITTING STATION FOR PRODUCING A SECOND AND IDENTICAL ADDITIONAL PULSE SERIES, AND MEANS APPLYING SAID SECOND ADDITIONAL PULSE SERIES TO SAID COMPOSITE PULSE SERIES AT SAID RECEIVING STATION TO RECONVERT THE LATTER INTO SAID FIRST PULSE SERIES.
References Cited (Backward Citations)
US2405500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |