CA484489A - Systemes de signalisation par sans fil et leurs appareils - Google Patents

Systemes de signalisation par sans fil et leurs appareils

Info

Publication number
CA484489A
CA484489A CA484489A CA484489DA CA484489A CA 484489 A CA484489 A CA 484489A CA 484489 A CA484489 A CA 484489A CA 484489D A CA484489D A CA 484489DA CA 484489 A CA484489 A CA 484489A
Authority
CA
Canada
Prior art keywords
apparatus therefor
signalling systems
wireless signalling
wireless
systems
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA484489A
Other languages
English (en)
Inventor
Calland Williams Frederic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ferranti International PLC
Original Assignee
Ferranti PLC
Publication date
Application granted granted Critical
Publication of CA484489A publication Critical patent/CA484489A/fr
Expired legal-status Critical Current

Links

CA484489A Systemes de signalisation par sans fil et leurs appareils Expired CA484489A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA484489T

Publications (1)

Publication Number Publication Date
CA484489A true CA484489A (fr) 1952-07-01

Family

ID=35624205

Family Applications (1)

Application Number Title Priority Date Filing Date
CA484489A Expired CA484489A (fr) Systemes de signalisation par sans fil et leurs appareils

Country Status (1)

Country Link
CA (1) CA484489A (fr)

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