Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Telephone intercommunication system providing common access to a communication line Image Number 4 for United States Patent #3931479. A private telephone intercommunication system including facilities for connecting the system to a telephone central office. Common supervisory means are provided to control access to a line from each station.       Recently Added Patents Dinner plate Adaptation of location similarity threshold in associative content retrieval System and method for compiling geospatial data for on-line collaboration Bottle rack Method and device of bitrate distribution/truncation for scalable audio coding Fiber air-laying process for fibrous structures suitable for use in absorbent articles System and method of driving a liquid crystal display   Randomly Featured Patents Weft thread lubrication device for weaving looms Single-use syringe Methods of imaging, focusing and conditioning neutrons Process for spinning poly(polymethylene terephthalamide) fiber Device for centering a tubular fabric Liquid ejection apparatus, liquid ejection system, and liquid ejection method Outdoor luminaire Image forming apparatus and medium container installed therein High density electrical connector Method for improving the perceived performance of a computer system © 2006-2008 PatentGenius. All Rights Reserved.