Resources Contact Us Home
Collapsible sofa bed mattress

Image Number 5 for United States Patent #5551104.

A mattress of a sofa bed contains a portion which is collapsible and portions which are conventional and non-collapsible. The collapsible and non-collapsible portions are hinged to fold within a sofa bed frame.

  Recently Added Patents
Inhibition of HRP-3 using modified oligonucleotides
DC/DC converter, power supply circuit, and semiconductor device
SIC semiconductor device and method for manufacturing the same
Method of fabricating solid electrolytic capacitor and solid electrolytic capacitor
Organic light emitting diode light source device
Bend resistant cable
Data storage device with surface ornamentation
  Randomly Featured Patents
Use of positioning information to determine whether to trigger a packet-data-network re-registration when detecting multiple radio signals of sufficient strength
Variable exit area ramjet nozzle
Monoclonal antibodies specific for the extracellular domain of prostate-specific membrane antigen
Super-orthogonal space-time trellis codes, and applications thereof
Peer-to-peer exchange of data resources in a control system
Method of forming a floating charge pump and structure therefor
Endless belt device and image forming apparatus using the device
Noninvasive method of measuring blood density and hematocrit
Providing a network communication status description based on user characteristics
Light emitting heterojunction semiconductor device