CA288997A - Casque telephonique - Google Patents

Casque telephonique

Info

Publication number
CA288997A
CA288997A CA288997A CA288997DA CA288997A CA 288997 A CA288997 A CA 288997A CA 288997 A CA288997 A CA 288997A CA 288997D A CA288997D A CA 288997DA CA 288997 A CA288997 A CA 288997A
Authority
CA
Canada
Prior art keywords
telephone
headgear attachment
headgear
attachment
telephone headgear
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
CA288997A
Other languages
English (en)
Inventor
Stuart Spens Steuart Douglas
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 CA288997A publication Critical patent/CA288997A/fr
Expired legal-status Critical Current

Links

CA288997A Casque telephonique Expired CA288997A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA288997T

Publications (1)

Publication Number Publication Date
CA288997A true CA288997A (fr) 1929-04-23

Family

ID=35225809

Family Applications (1)

Application Number Title Priority Date Filing Date
CA288997A Expired CA288997A (fr) Casque telephonique

Country Status (1)

Country Link
CA (1) CA288997A (fr)

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