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Class Information
Number: 40/460
Name: Card, picture, or sign exhibiting > Changing exhibitor > Door latch operated
Description: Device wherein movement of the means for bolting or unbolting the closure means causes movement of the display device.










Patents under this class:

Patent Number Title Of Patent Date Issued
7640883 Fluid-operated communication system Jan. 5, 2010
6967587 Hands-free door opener and method Nov. 22, 2005
4724630 Electric sign Feb. 16, 1988
4677777 Price setting and display system for multiple unit merchandising machine Jul. 7, 1987











 
 
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