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.)
CHICAGO TELEPHONE SUPPLY Corp
Original Assignee
CHICAGO TELEPHONE SUPPLY Corp
Publication date
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Publication of CA579200ApublicationCriticalpatent/CA579200A/en