CA282801A - Speaking tube - Google Patents

Speaking tube

Info

Publication number
CA282801A
CA282801A CA282801A CA282801DA CA282801A CA 282801 A CA282801 A CA 282801A CA 282801 A CA282801 A CA 282801A CA 282801D A CA282801D A CA 282801DA CA 282801 A CA282801 A CA 282801A
Authority
CA
Canada
Prior art keywords
speaking tube
speaking
tube
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
CA282801A
Other languages
French (fr)
Inventor
Levy Joseph
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA282801A publication Critical patent/CA282801A/en
Expired legal-status Critical Current

Links

CA282801A Speaking tube Expired CA282801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA282801T

Publications (1)

Publication Number Publication Date
CA282801A true CA282801A (en) 1928-08-28

Family

ID=35215893

Family Applications (1)

Application Number Title Priority Date Filing Date
CA282801A Expired CA282801A (en) Speaking tube

Country Status (1)

Country Link
CA (1) CA282801A (en)

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