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
Wafer recycling method
Systems and methods for implementing multi-application tabs and tab sets
Avalanche photodiodes having accurate and reproductible amplification layer
Printing system, information processing apparatus, print job processing method, information processing method, program, and storage medium
Memory device having collaborative filtering to reduce noise
Thermochromic microparticles, dispersions thereof, and manufacturing method thereof, as well as light-modulating coatings, light-modulating films and light-modulating inks
Method of manufacturing III-nitride crystal
  Randomly Featured Patents
Recording and/or reproducing apparatus including a reel disc having magnetically acting holding means for a reel
Magnetic memory device and method for production thereof
Digital television tape recording
Apparatus for conditioning wafers
Variable torque-limiting driver
Green sheet and manufacturing method thereof, manufacturing method of multi-layer wiring board and manufacturing method of double-sided wiring board
Spray nozzle assembly for a windshield of an automobile
Cytarabine monophosphate prodrugs
Vertical light-emitting diode
Verbena plant named `Sunmaricoaka`