CA297812A - Instrument telephonique - Google Patents

Instrument telephonique

Info

Publication number
CA297812A
CA297812A CA297812A CA297812DA CA297812A CA 297812 A CA297812 A CA 297812A CA 297812 A CA297812 A CA 297812A CA 297812D A CA297812D A CA 297812DA CA 297812 A CA297812 A CA 297812A
Authority
CA
Canada
Prior art keywords
telephone instrument
telephone
instrument
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
CA297812A
Other languages
English (en)
Inventor
Frederic Marchant Hayes Charles
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.)
Mullard Radio Valve Co Ltd
Original Assignee
Mullard Radio Valve Co Ltd
Publication date
Application granted granted Critical
Publication of CA297812A publication Critical patent/CA297812A/fr
Expired legal-status Critical Current

Links

CA297812A Instrument telephonique Expired CA297812A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA297812T

Publications (1)

Publication Number Publication Date
CA297812A true CA297812A (fr) 1930-02-25

Family

ID=35235132

Family Applications (1)

Application Number Title Priority Date Filing Date
CA297812A Expired CA297812A (fr) Instrument telephonique

Country Status (1)

Country Link
CA (1) CA297812A (fr)

Similar Documents

Publication Publication Date Title
CA305490A (fr) Instrument telephonique
CA305716A (fr) Instrument telephonique
CA297812A (fr) Instrument telephonique
CA305246A (fr) Appareil telephonique
AU2498830A (en) An improved bagloader
CA302986A (fr) Ligne telephonique
CA306496A (fr) Haut-parleur
CA302300A (fr) Dispositif de telephone
CA310909A (fr) Instrument telephonique
CA318320A (fr) Instrument telephonique
CA318321A (fr) Instrument telephonique
CA297714A (fr) Violon
CA303042A (fr) Instrument acoustique
CA302289A (fr) Instrument acoustique
CA299779A (fr) Microphone
AU1774329A (en) Improvements relating to telephone instruments
AU2469130A (en) Improvements relating to telephone instruments
AU2469230A (en) Improvements relating to telephone instruments
AU2529630A (en) Improvements relating to telephone instruments
AU2529730A (en) Improvements relating to telephone instruments
CA297574A (fr) Support de telephone
CA298711A (fr) Filtre de la voix
CA298695A (fr) Haut parleur
CA301089A (fr) Piano
CA305300A (fr) Piano