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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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Filing date
Publication date
Application filed by Matsushita Electric Works LtdfiledCriticalMatsushita Electric Works Ltd
Priority to JP1074476ApriorityCriticalpatent/JPS5294099A/en
Publication of JPS5294099ApublicationCriticalpatent/JPS5294099A/en
PURPOSE: To alarm by using a swtich having open- and close sided contacts and detecting the OFF output from the close sided contact in response to the opening of window.