(under subclass 441.5) Apparatus combined with means for applying a distorting force to the envelope so as to permanently deflect at least a portion of it out of its normal plane.
(1) Note. A machine which manipulates envelope flaps from an opened or extended position to a closed position (i.e., overlying the receptacle body) is considered to be bending within the scope of this subclass, regardless of whether the envelope has been previously creased.
SEE OR SEARCH THIS CLASS, SUBCLASS:
443+, for a patent to bending and folding means combined with bonding means, of general utility.