CA249696A - Casque telephonique - Google Patents

Casque telephonique

Info

Publication number
CA249696A
CA249696A CA249696A CA249696DA CA249696A CA 249696 A CA249696 A CA 249696A CA 249696 A CA249696 A CA 249696A CA 249696D A CA249696D A CA 249696DA CA 249696 A CA249696 A CA 249696A
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
CA249696A
Other languages
English (en)
Inventor
L. Carlson Wendell
W. Carpenter Glenn
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 CA249696A publication Critical patent/CA249696A/fr
Expired legal-status Critical Current

Links

CA249696A Casque telephonique Expired CA249696A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA249696T

Publications (1)

Publication Number Publication Date
CA249696A true CA249696A (fr) 1925-05-19

Family

ID=35156670

Family Applications (1)

Application Number Title Priority Date Filing Date
CA249696A Expired CA249696A (fr) Casque telephonique

Country Status (1)

Country Link
CA (1) CA249696A (fr)

Similar Documents

Publication Publication Date Title
CA249696A (fr) Casque telephonique
CA247779A (fr) Groupe telephonique manuel
CA248306A (fr) Membrane telephonique
CA250764A (fr) Microphone
CA250765A (fr) Microphone
CA254908A (fr) Microphone
CA231854A (fr) Casque telephonique
CA255701A (fr) Silencieux de telephone
CA248017A (fr) Groupe telephonique de bureau
CA245962A (fr) Instrument telephonique
CA247117A (fr) Instrument telephonique
CA246336A (fr) Recepteur telephonique
CA246428A (fr) Ecouteur telephonique
CA249957A (fr) Recepteur telephonique
CA246412A (fr) Systeme telephonique
CA246427A (fr) Systeme telephonique
CA249122A (fr) Reseau telephonique
CA249128A (fr) Reseau telephonique
CA249129A (fr) Reseau telephonique
CA249131A (fr) Reseau telephonique
CA249132A (fr) Reseau telephonique
CA249133A (fr) Reseau telephonique
CA249900A (fr) Reseau telephonique
CA249901A (fr) Reseau telephonique
CA249903A (fr) Reseau telephonique