![]() ![]() Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ![]() Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US00351164A Inventor I Haymes Current Assignee (The listed assignees may be inaccurate. Google Patents Alarm system with radio alarm link and equipment-activating power line linkÄownload PDF Info Publication number US3852740A US3852740A US00351164A US35116473A US3852740A US 3852740 A US3852740 A US 3852740A US 00351164 A US00351164 A US 00351164A US 35116473 A US35116473 A US 35116473A US 3852740 A US3852740 A US 3852740A Authority US United States Prior art keywords alarm protected premises monitoring station signal premises Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US3852740A - Alarm system with radio alarm link and equipment-activating power line link US3852740A - Alarm system with radio alarm link and equipment-activating power line link ![]()
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