CA429613A - Sound signal apparatus - Google Patents

Sound signal apparatus

Info

Publication number
CA429613A
CA429613A CA429613A CA429613DA CA429613A CA 429613 A CA429613 A CA 429613A CA 429613 A CA429613 A CA 429613A CA 429613D A CA429613D A CA 429613DA CA 429613 A CA429613 A CA 429613A
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
CA429613A
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 CA429613A publication Critical patent/CA429613A/en
Expired legal-status Critical Current

Links

CA429613A Sound signal apparatus Expired CA429613A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA429613T

Publications (1)

Publication Number Publication Date
CA429613A true CA429613A (en) 1945-08-21

Family

ID=35544615

Family Applications (1)

Application Number Title Priority Date Filing Date
CA429613A Expired CA429613A (en) Sound signal apparatus

Country Status (1)

Country Link
CA (1) CA429613A (en)

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