CA245462A - Sound detecting apparatus - Google Patents

Sound detecting apparatus

Info

Publication number
CA245462A
CA245462A CA245462A CA245462DA CA245462A CA 245462 A CA245462 A CA 245462A CA 245462 A CA245462 A CA 245462A CA 245462D A CA245462D A CA 245462DA CA 245462 A CA245462 A CA 245462A
Authority
CA
Canada
Prior art keywords
detecting apparatus
sound detecting
sound
detecting
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
CA245462A
Other languages
French (fr)
Inventor
L. Walker William
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.)
WALKER SIGNAL AND EQUIPMENT Corp
Original Assignee
WALKER SIGNAL AND EQUIPMENT Corp
Publication date
Application granted granted Critical
Publication of CA245462A publication Critical patent/CA245462A/en
Expired legal-status Critical Current

Links

CA245462A Sound detecting apparatus Expired CA245462A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA245462T

Publications (1)

Publication Number Publication Date
CA245462A true CA245462A (en) 1924-12-16

Family

ID=35152437

Family Applications (1)

Application Number Title Priority Date Filing Date
CA245462A Expired CA245462A (en) Sound detecting apparatus

Country Status (1)

Country Link
CA (1) CA245462A (en)

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