US PATENT SUBCLASS 266 / 273
.~.~ By means injecting plugging compound, e.g., mud gun

Current as of: June, 1999
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266 /   HD   METALLURGICAL APPARATUS

271  DF  MEANS SEALING OR OPENING APERTURE IN VESSEL {1}
272  DF  .~ By means plugging aperture {1}
273.~.~ By means injecting plugging compound, e.g., mud gun

DEFINITION

Classification: 266/273

Device under the Class 272 wherein the means to seal the aperture includes means for extruding a hardenable fluent substance into the aperture.

SEE OR SEARCH CLASS

222, Dispensing, appropriate subclass, for dispensers of general utility and especially 390, for dispensers having a supply container with a follower, e.g., a piston, therein and having a screw to advance the follower.