CA501232A - Switching apparatus for telephone systems - Google Patents

Switching apparatus for telephone systems

Info

Publication number
CA501232A
CA501232A CA501232A CA501232DA CA501232A CA 501232 A CA501232 A CA 501232A CA 501232 A CA501232 A CA 501232A CA 501232D A CA501232D A CA 501232DA CA 501232 A CA501232 A CA 501232A
Authority
CA
Canada
Prior art keywords
switching apparatus
telephone systems
telephone
systems
switching
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
CA501232A
Other languages
French (fr)
Inventor
Sengebusch Hans
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA501232A publication Critical patent/CA501232A/en
Expired legal-status Critical Current

Links

CA501232A Switching apparatus for telephone systems Expired CA501232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA501232T

Publications (1)

Publication Number Publication Date
CA501232A true CA501232A (en) 1954-04-06

Family

ID=35647127

Family Applications (1)

Application Number Title Priority Date Filing Date
CA501232A Expired CA501232A (en) Switching apparatus for telephone systems

Country Status (1)

Country Link
CA (1) CA501232A (en)

Similar Documents

Publication Publication Date Title
CA501232A (en) Switching apparatus for telephone systems
CA502241A (en) Switching apparatus for telephone systems
CA501719A (en) Control apparatus for telephone systems
CA499204A (en) Switching apparatus
CA506412A (en) Connector switches for telephone systems
CA503174A (en) Substation circuits for telephone systems
CA506632A (en) Telecommunication switching systems
CA507055A (en) Electronic telephone switching system
CA499356A (en) Telephone systems
CA501321A (en) Telephone systems
CA502236A (en) Telephone systems
CA502238A (en) Telephone systems
CA502239A (en) Telephone systems
CA506411A (en) Telephone systems
CA507617A (en) Telephone systems
CA507729A (en) Toll switching telephone systems
CA507730A (en) Toll switching telephone systems
CA500087A (en) Telephone substation apparatus
CA503239A (en) Telephone substation apparatus
CA510190A (en) Telephone systems
CA510665A (en) Telephone systems
CA511747A (en) Telephone systems
CA512083A (en) Telephone systems
CA512309A (en) Telephone systems
CA512310A (en) Telephone systems