Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Class Information
Number: 40/459
Name: Card, picture, or sign exhibiting > Changing exhibitor > Door operated
Description: Device wherein the movement of a closure such as a gate or a door causes movement of the display device.










Patents under this class:

Patent Number Title Of Patent Date Issued
8169317 Hands-free door opening system and method May. 1, 2012
7571694 Occupancy indication device and method Aug. 11, 2009
7068179 Hands-free door opener and method Jun. 27, 2006
6967587 Hands-free door opener and method Nov. 22, 2005
5014472 Tombstone May. 14, 1991
4881335 Door sign device Nov. 21, 1989











 
 
  Recently Added Patents
ASICs having programmable bypass of design faults
Analysis device and an analysis apparatus using the analysis device
Semiconductor device having a bonding pad and shield structure of different thickness
Illumination apparatus for microlithography projection system including polarization-modulating optical element
Apparatus and method for information display of portable device
Drug delivery system
Tie down strap hook
  Randomly Featured Patents
Precurved gusseted glove
Emulsion polymers having multimodal molecular weight distributions
Seek actuator for optical recording
Method for preparing composite flexible graphite material
Dehydrogenation of dehydrogenatable hydrocarbons
Buckle device
Vibration meter and method of measuring a viscosity of a fluid
Port replicator for portable electronic devices
Thickened silicone dissolving agent
Electrochemical device comprising aliphatic mono-nitrile compound