US PATENT SUBCLASS 15 / 250.28
.~.~ Opposed cleaning elements

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

246  DF  ATTACHMENTS {8}
250.001  DF  .~ Optical-member-attachable cleaner (e.g., windshield wiper) {28}
250.28.~.~ Opposed cleaning elements

DEFINITION

Classification: 15/250.28

(under subclass 250.001) Cleaning attachments comprising at least two surface contacting members constrained to move together and mounted on opposite confronting sides of the surface to be cleaned.