CA433939A - Wave signalling system - Google Patents

Wave signalling system

Info

Publication number
CA433939A
CA433939A CA433939A CA433939DA CA433939A CA 433939 A CA433939 A CA 433939A CA 433939 A CA433939 A CA 433939A CA 433939D A CA433939D A CA 433939DA CA 433939 A CA433939 A CA 433939A
Authority
CA
Canada
Prior art keywords
signalling system
wave signalling
wave
signalling
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
CA433939A
Other languages
French (fr)
Inventor
M. Sprague Robert
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.)
PRESS WIRELESS
Original Assignee
PRESS WIRELESS
Publication date
Application granted granted Critical
Publication of CA433939A publication Critical patent/CA433939A/en
Expired legal-status Critical Current

Links

CA433939A Wave signalling system Expired CA433939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA433939T

Publications (1)

Publication Number Publication Date
CA433939A true CA433939A (en) 1946-04-02

Family

ID=35548566

Family Applications (1)

Application Number Title Priority Date Filing Date
CA433939A Expired CA433939A (en) Wave signalling system

Country Status (1)

Country Link
CA (1) CA433939A (en)

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