(under subclass 75) Subject matter wherein the object is held by air or atmospheric pressure caused either by forming a partial vacuum on one side of the object or by blowing air against the object; or wherein the object is held between two members which are being pushed toward each other by a coil or leaf spring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
25, for a book holder having spring or suction means.
73, for holder for photosensitive medium utilizing vacuum or fluid pressure means.
SEE OR SEARCH CLASS
248, Supports, 362, and 363 for vacuum holddown devices of general utility.
