CA284381A - Sound projector - Google Patents

Sound projector

Info

Publication number
CA284381A
CA284381A CA284381A CA284381DA CA284381A CA 284381 A CA284381 A CA 284381A CA 284381 A CA284381 A CA 284381A CA 284381D A CA284381D A CA 284381DA CA 284381 A CA284381 A CA 284381A
Authority
CA
Canada
Prior art keywords
sound projector
projector
sound
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
CA284381A
Other languages
French (fr)
Inventor
Ernest Clifton 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.)
CLIFTOPHONE
CLIFTOPHONE AND RECORDS
Original Assignee
CLIFTOPHONE
CLIFTOPHONE AND RECORDS
Publication date
Application granted granted Critical
Publication of CA284381A publication Critical patent/CA284381A/en
Expired legal-status Critical Current

Links

CA284381A Sound projector Expired CA284381A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA284381T

Publications (1)

Publication Number Publication Date
CA284381A true CA284381A (en) 1928-10-30

Family

ID=35217472

Family Applications (1)

Application Number Title Priority Date Filing Date
CA284381A Expired CA284381A (en) Sound projector

Country Status (1)

Country Link
CA (1) CA284381A (en)

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