R); f•ded in Britain 25 March 1977 Printed circuit conductors are interleaved with or surround this tone arm made entirely of electrical insulation material such as a resin or wood, and which is solid rather than tubular. The conductors are formed by evaporation or electro-deposition prior to etching. The four signal conductors 4 which are in a stereophonic embodiment as shown here in cross section, alternate in position with the conductors connected to ground 5. This arrangement minimizes mutual interference while rigidly positioning the conductors. The nonmetallic and nontubular tone arm is claimed to be less prone to resonate, more readily formable in manufacture, light in weight, and rigid.-DSG 4,246,444 43.88.Si TELEPHONE HANDSET ACOUSTIC COUPLING This patent describes the mechanical construction of a magnetic telephone receiver.-RWC 246
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.