Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     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 Molded deformable shape gasket for molding large gaskets in a deformed shape Columbarium construction and shutter mounting system Multi-color light emitting device circuit Multi-stage amplifier Sheet aligning member for sheet processing apparatus Delivery operations information system with route and unit maintenance feature and methods of use Medical delivery device with a protective member   Randomly Featured Patents Polystyrene anion exchange polymers Method and apparatus for fire fighting Projection exposure apparatus containing an enclosed hollow structure Method for manufacturing a non-volatile memory device Photonic devices comprising thermo-optic polymer Moisturizing cosmetic composition comprising a combination of homarine and erythritol Electronic calculator Process of producing bioabsorbable filaments Apparatus monitoring the deposition of a liquid-to-pasty medium on a substrate Furniture unit having a modular communication network © 2006-2008 PatentGenius. All Rights Reserved.