CA439778A - Automatic telephone system - Google Patents

Automatic telephone system

Info

Publication number
CA439778A
CA439778A CA439778DA CA439778A CA 439778 A CA439778 A CA 439778A CA 439778D A CA439778D A CA 439778DA CA 439778 A CA439778 A CA 439778A
Authority
CA
Canada
Prior art keywords
telephone system
automatic telephone
automatic
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
Other languages
French (fr)
Inventor
M. Blackhall James
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.)
LEICH ELECTRIC Co
Original Assignee
LEICH ELECTRIC Co
Publication date
Application granted granted Critical
Publication of CA439778A publication Critical patent/CA439778A/en
Expired legal-status Critical Current

Links

CA439778D Automatic telephone system Expired CA439778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA439778T

Publications (1)

Publication Number Publication Date
CA439778A true CA439778A (en) 1947-02-18

Family

ID=35555012

Family Applications (1)

Application Number Title Priority Date Filing Date
CA439778D Expired CA439778A (en) Automatic telephone system

Country Status (1)

Country Link
CA (1) CA439778A (en)

Similar Documents

Publication Publication Date Title
CA439778A (en) Automatic telephone system
CA444075A (en) Automatic telephone system
CA439394A (en) Telephone system
CA440708A (en) Telephone system
CA440944A (en) Telephone system
CA441179A (en) Telephone system
CA441180A (en) Telephone system
CA441181A (en) Telephone system
CA441406A (en) Telephone system
CA441465A (en) Telephone system
CA441947A (en) Telephone system
CA442718A (en) Telephone system
CA442941A (en) Telephone system
CA442988A (en) Telephone system
CA443037A (en) Telephone system
CA443405A (en) Telephone system
CA443407A (en) Telephone system
CA443721A (en) Telephone system
CA443722A (en) Telephone system
CA445441A (en) Telephone system
CA445442A (en) Telephone system
CA445443A (en) Telephone system
CA445445A (en) Telephone system
CA445446A (en) Telephone system
AU138489B2 (en) Improvements relating to automatic telephone systems