US PATENT SUBCLASS 15 / 250.11
.~.~ Readily attached and detached cleaner for building windows

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}
250.11.~.~ Readily attached and detached cleaner for building windows

DEFINITION

Classification: 15/250.11

(under subclass 250.001) Cleaners of the type used to clean the windows of buildings and which are readily removable from the frame or sash of one window and readily movable and attachable to the frame or sash of another window.

(1) Note. Patents in this subclass are of the type adapted to aid a workman in cleaning the outside of a window while working from inside a building.