CA329047A - Sound projection system - Google Patents

Sound projection system

Info

Publication number
CA329047A
CA329047A CA329047A CA329047DA CA329047A CA 329047 A CA329047 A CA 329047A CA 329047 A CA329047 A CA 329047A CA 329047D A CA329047D A CA 329047DA CA 329047 A CA329047 A CA 329047A
Authority
CA
Canada
Prior art keywords
projection system
sound projection
sound
projection
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
CA329047A
Other languages
French (fr)
Inventor
Mclean Nicolson Alexander
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.)
COMMUNICATION PATENTS
Original Assignee
COMMUNICATION PATENTS
Publication date
Application granted granted Critical
Publication of CA329047A publication Critical patent/CA329047A/en
Expired legal-status Critical Current

Links

CA329047A Sound projection system Expired CA329047A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA329047T

Publications (1)

Publication Number Publication Date
CA329047A true CA329047A (en) 1933-01-03

Family

ID=35291416

Family Applications (1)

Application Number Title Priority Date Filing Date
CA329047A Expired CA329047A (en) Sound projection system

Country Status (1)

Country Link
CA (1) CA329047A (en)

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