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Class 340/815.85 - Self restoring type annunciator


Subclass of Class 340 - Communications: electrical
Definition: Subject matter comprising a target raised into an operative
No. of patents: 1
Last issue date: 02/12/1980


NumberTitleIssue Date
4187632Remote controlled image display device
A remote controlled image display device includes an assembly of contrast bodies each of which is pivotally mounted for movement between a position of rest and an optionally arrestable position and exhibits to a viewer in combination with a background sur... 		02/12/1980
 
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