(under subclass 97) Subject matter, relating to patches for leaky pipes or hose.
SEE OR SEARCH CLASS
114, Ships,
227+, for leak stoppers for ships.
152, Resilient Tires and Wheels,
367+, for pneumatic tire patches.
220, Receptacles, 243+, for patches for metal pipe which are inserted through an opening in the pipe wall and having clamp members gripping the wall between them.
