CA105493A - Sound magnifier for telegraphic instruments - Google Patents

Sound magnifier for telegraphic instruments

Info

Publication number
CA105493A
CA105493A CA000105493A CA105493DA CA105493A CA 105493 A CA105493 A CA 105493A CA 000105493 A CA000105493 A CA 000105493A CA 105493D A CA105493D A CA 105493DA CA 105493 A CA105493 A CA 105493A
Authority
CA
Canada
Prior art keywords
magnifier
sound
telegraphic instruments
telegraphic
instruments
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
CA000105493A
Other languages
French (fr)
Inventor
Frederick Olinburg Hanson
William Schrenkler
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of CA105493A publication Critical patent/CA105493A/en
Expired legal-status Critical Current

Links

CA000105493A 1906-08-20 1906-08-20 Sound magnifier for telegraphic instruments Expired CA105493A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA105493T 1906-08-20

Publications (1)

Publication Number Publication Date
CA105493A true CA105493A (en) 1907-05-28

Family

ID=45225221

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000105493A Expired CA105493A (en) 1906-08-20 1906-08-20 Sound magnifier for telegraphic instruments

Country Status (1)

Country Link
CA (1) CA105493A (en)

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