Resources Contact Us Home
Collapsible sofa bed mattress

Image Number 3 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
Dynamic mode transitions for cache instructions
Semiconductor device having multiple bump heights and multiple bump diameters
Context processor for video analysis system
Lens-integrated optical waveguide and method of making the same
GNSS signal processing methods and apparatus with tracking interruption
Semi trailer under-run protection device
Vehicle with improved integrated steering and suspension system
  Randomly Featured Patents
Heat exchanger
Procedure for establishment of communication between two data transmission terminals and terminal for the embodiment of the procedure
Lounge chair tanning towel
Switching communication radio path based on power constraints
Method for multi-target-enabled resolution of phase ambiguity
Toe piece for a safety ski-binding
Tail fin firing device
Parallel displacement/inclination measuring apparatus and antenna system
Mobile communication method, radio control station, and radio base station
Hydroxylamine-gallic compound composition and process