CA491978A - Amplification of telephone reception - Google Patents

Amplification of telephone reception

Info

Publication number
CA491978A
CA491978A CA491978A CA491978DA CA491978A CA 491978 A CA491978 A CA 491978A CA 491978 A CA491978 A CA 491978A CA 491978D A CA491978D A CA 491978DA CA 491978 A CA491978 A CA 491978A
Authority
CA
Canada
Prior art keywords
amplification
telephone reception
telephone
reception
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
CA491978A
Other languages
French (fr)
Inventor
L. M. Souget Matthys
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 CA491978A publication Critical patent/CA491978A/en
Expired legal-status Critical Current

Links

CA491978A Amplification of telephone reception Expired CA491978A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA491978T

Publications (1)

Publication Number Publication Date
CA491978A true CA491978A (en) 1953-04-14

Family

ID=35631724

Family Applications (1)

Application Number Title Priority Date Filing Date
CA491978A Expired CA491978A (en) Amplification of telephone reception

Country Status (1)

Country Link
CA (1) CA491978A (en)

Similar Documents

Publication Publication Date Title
CA491978A (en) Amplification of telephone reception
CA497074A (en) Electromagnetic telephone instruments
CA491767A (en) Telephone receiver
CA489993A (en) Ethers of beta-hydroxyadiponitrile
CA491419A (en) Loud speaking telephone set
CA490001A (en) Receiver
CA490733A (en) Telephone auxiliary amplifying device
CA491719A (en) Telephone system
CA493424A (en) Telephone system
CA493484A (en) Telephone system
CA494933A (en) Radio telephone receiving systems
CA498642A (en) Loudspeakers
CA489970A (en) Amplifier
CA495992A (en) Amplifier
CA490277A (en) Receiver for short waves
CA491718A (en) Microphones
CA569433A (en) Telephone handset terminating and amplifier circuit
CA497260A (en) Subscriber telephone set
CA497266A (en) Differential quantization of communication signals
CA491104A (en) Telephone systems
CA493123A (en) Telephone systems
CA493483A (en) Telephone systems
CA493485A (en) Telephone systems
CA493486A (en) Telephone systems
CA493889A (en) Telephone systems