CA444891A - Sound signal apparatus - Google Patents

Sound signal apparatus

Info

Publication number
CA444891A
CA444891A CA444891A CA444891DA CA444891A CA 444891 A CA444891 A CA 444891A CA 444891 A CA444891 A CA 444891A CA 444891D A CA444891D A CA 444891DA CA 444891 A CA444891 A CA 444891A
Authority
CA
Canada
Prior art keywords
sound signal
signal apparatus
sound
signal
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
CA444891A
Other languages
French (fr)
Inventor
Richards Mackay John
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.)
WALLACE AND TIERNAN PRODUCTS
Original Assignee
WALLACE AND TIERNAN PRODUCTS
Publication date
Application granted granted Critical
Publication of CA444891A publication Critical patent/CA444891A/en
Expired legal-status Critical Current

Links

CA444891A Sound signal apparatus Expired CA444891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA444891T

Publications (1)

Publication Number Publication Date
CA444891A true CA444891A (en) 1947-11-04

Family

ID=35562542

Family Applications (1)

Application Number Title Priority Date Filing Date
CA444891A Expired CA444891A (en) Sound signal apparatus

Country Status (1)

Country Link
CA (1) CA444891A (en)

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