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.)
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.)
Canadian Motorola Electronics Ltd
Original Assignee
Canadian Motorola Electronics Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canadian Motorola Electronics LtdfiledCriticalCanadian Motorola Electronics Ltd
Priority to CA876268ApriorityCriticalpatent/CA876268A/en
Application grantedgrantedCritical
Publication of CA876268ApublicationCriticalpatent/CA876268A/en
H04M9/00—Arrangements for interconnection not involving centralised switching
H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
CA876268A1969-06-161969-06-16Intercom system for selectively providing private audio communication between central station and remote stations
ExpiredCA876268A
(en)