US PATENT SUBCLASS 15 / 304
.~.~.~.~ Hollow work internal cleaning, e.g., bag and/or bottle cleaners

Current as of: June, 1999
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15 /   HD   BRUSHING, SCRUBBING, AND GENERAL CLEANING

3  DF  MACHINES {11}
300.1  DF  .~ With air blast or suction {26}
301  DF  .~.~ Fixed position cleaners or installed cleaning systems {6}
303  DF  .~.~.~ With work handling or supporting {4}
304.~.~.~.~ Hollow work internal cleaning, e.g., bag and/or bottle cleaners

DEFINITION

Classification: 15/304

(under subclass 303) Cleaning apparatus specially constructed to clean the interior surfaces of hollow work or of passages or cavities in the work.

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406+, for manipulable air-blast devices for cleaning hollow work such as boiler flues.

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223, Apparel Apparatus,

43, for air blast or suction devices for turning inside out articles of wearing apparel, bags, or tubular fabrics where there are no additional means for cleaning.