CA638257A - Incoming telephone call pabx restrictive service - Google Patents

Incoming telephone call pabx restrictive service

Info

Publication number
CA638257A
CA638257A CA638257A CA638257DA CA638257A CA 638257 A CA638257 A CA 638257A CA 638257 A CA638257 A CA 638257A CA 638257D A CA638257D A CA 638257DA CA 638257 A CA638257 A CA 638257A
Authority
CA
Canada
Prior art keywords
pabx
telephone call
incoming telephone
restrictive service
restrictive
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
CA638257A
Inventor
L. Smith Lester
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 CA638257A publication Critical patent/CA638257A/en
Expired legal-status Critical Current

Links

CA638257A Incoming telephone call pabx restrictive service Expired CA638257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA638257T

Publications (1)

Publication Number Publication Date
CA638257A true CA638257A (en) 1962-03-13

Family

ID=35916767

Family Applications (1)

Application Number Title Priority Date Filing Date
CA638257A Expired CA638257A (en) Incoming telephone call pabx restrictive service

Country Status (1)

Country Link
CA (1) CA638257A (en)

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