(under subclass 271) Devices which have supporting means which engage and support the filament intermediate the ends of the filament.
SEE OR SEARCH THIS CLASS, SUBCLASS:
273, where the device includes means for supporting a plural section filament, that is, a filament which is composed of a plurality of separate sections of filament wire.
274, where the device includes an envelope, and the filament supports are supported by opposed or spaced parts of the envelope wall.
276, where the device has the filament supported by an electrical insulating member, the insulating member being supported by an electrically conductive wire, rod or tube.
277, for this subject matter where the device is provided with an insulating standard or rod having a plurality of
filament anchors or brackets supported by the rod or standard, so that the filament is supported at one or more intermediate points. 278, for this subject matter where the support which engages the intermediate portion of the filament includes means for maintaining the filament under a tension force.
