BE477658A - - Google Patents

Info

Publication number
BE477658A
BE477658A BE477658DA BE477658A BE 477658 A BE477658 A BE 477658A BE 477658D A BE477658D A BE 477658DA BE 477658 A BE477658 A BE 477658A
Authority
BE
Belgium
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE477658A publication Critical patent/BE477658A/xx
Priority to GB864341A priority Critical patent/GB580167A/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04KSECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00Secret communication
    • H04K1/02Secret communication by adding a second signal to make the desired signal unintelligible
BE477658D 1941-07-09 BE477658A (xx)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB864341A GB580167A (en) 1941-07-09 1941-07-09 Improvements in or relating to secret transmission systems

Publications (1)

Publication Number Publication Date
BE477658A true BE477658A (xx)

Family

ID=9856430

Family Applications (1)

Application Number Title Priority Date Filing Date
BE477658D BE477658A (xx) 1941-07-09

Country Status (5)

Country Link
US (1) US2406841A (xx)
BE (1) BE477658A (xx)
ES (1) ES176097A1 (xx)
FR (1) FR932703A (xx)
GB (1) GB580167A (xx)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466959A (en) * 1944-09-30 1949-04-12 Philco Corp Radio receiver noise discriminating circuit
US2953643A (en) * 1945-05-10 1960-09-20 Bell Telephone Labor Inc Inverted speech privacy using irregular inverting wave form
US2521690A (en) * 1945-08-14 1950-09-12 Standard Telephones Cables Ltd Secrecy preserving signaling system
US2556677A (en) * 1946-05-10 1951-06-12 Bell Telephone Labor Inc Secret communication system
US2510046A (en) * 1947-04-18 1950-05-30 Zenith Radio Corp Radio-wire signaling system
US2660666A (en) * 1950-01-05 1953-11-24 Westinghouse Electric Corp Secrecy transmission system
US4176316A (en) * 1953-03-30 1979-11-27 International Telephone & Telegraph Corp. Secure single sideband communication system using modulated noise subcarrier
USRE34004E (en) * 1953-03-30 1992-07-21 Itt Corporation Secure single sideband communication system using modulated noise subcarrier
US3225142A (en) * 1961-12-18 1965-12-21 Bell Telephone Labor Inc Privacy system
US4361729A (en) * 1968-01-24 1982-11-30 American Standard Inc. Narrowband analog message privacy system
US4805216A (en) * 1987-01-08 1989-02-14 Compfax Corporation Method and apparatus for continuously acknowledged link encrypting

Also Published As

Publication number Publication date
ES176097A1 (es) 1947-01-16
GB580167A (en) 1946-08-29
FR932703A (fr) 1948-03-31
US2406841A (en) 1946-09-03

Similar Documents

Publication Publication Date Title
BE442109A (xx)
BE445527A (xx)
BE445260A (xx)
BE445806A (xx)
BE445158A (xx)
BE444804A (xx)
BE446380A (xx)
BE447252A (xx)
BE443220A (xx)
BE445833A (xx)
BE444132A (xx)
BE445477A (xx)
BE446921A (xx)
BE447546A (xx)
BE446747A (xx)
BE445767A (xx)
BE444750A (xx)
BE446800A (xx)
BE445645A (xx)
BE446282A (xx)
BE444315A (xx)
BE445054A (xx)
BE446754A (xx)
BE446012A (xx)
BE446776A (xx)