CA231854A - Telephone headset - Google Patents

Telephone headset

Info

Publication number
CA231854A
CA231854A CA231854A CA231854DA CA231854A CA 231854 A CA231854 A CA 231854A CA 231854 A CA231854 A CA 231854A CA 231854D A CA231854D A CA 231854DA CA 231854 A CA231854 A CA 231854A
Authority
CA
Canada
Prior art keywords
telephone headset
headset
telephone
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
CA231854A
Other languages
French (fr)
Inventor
Dietrich Frederick
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.)
C BRANDES
Original Assignee
C BRANDES
Publication date
Application granted granted Critical
Publication of CA231854A publication Critical patent/CA231854A/en
Expired legal-status Critical Current

Links

CA231854A Telephone headset Expired CA231854A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA231854T

Publications (1)

Publication Number Publication Date
CA231854A true CA231854A (en) 1923-06-12

Family

ID=35129226

Family Applications (1)

Application Number Title Priority Date Filing Date
CA231854A Expired CA231854A (en) Telephone headset

Country Status (1)

Country Link
CA (1) CA231854A (en)

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