CA661012A - Sound signal device - Google Patents

Sound signal device

Info

Publication number
CA661012A
CA661012A CA661012A CA661012DA CA661012A CA 661012 A CA661012 A CA 661012A CA 661012 A CA661012 A CA 661012A CA 661012D A CA661012D A CA 661012DA CA 661012 A CA661012 A CA 661012A
Authority
CA
Canada
Prior art keywords
sound signal
signal device
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
CA661012A
Inventor
W. Gosswiller Earl
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.)
Federal Sign and Signal Corp
Original Assignee
Federal Sign and Signal Corp
Publication date
Application granted granted Critical
Publication of CA661012A publication Critical patent/CA661012A/en
Expired legal-status Critical Current

Links

CA661012A Sound signal device Expired CA661012A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA661012T

Publications (1)

Publication Number Publication Date
CA661012A true CA661012A (en) 1963-04-09

Family

ID=35955123

Family Applications (1)

Application Number Title Priority Date Filing Date
CA661012A Expired CA661012A (en) Sound signal device

Country Status (1)

Country Link
CA (1) CA661012A (en)

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