Title:
Window cleaning device
United States Patent 2787501
Inventors:
Tuma, Frank J.
Publication Date:
04/02/1957
Other Classes:
15/232, 239/289, 239/333, 239/375, 401/139, 401/147, 401/264
International Classes:
A47L1/08; B05B11/00; A47L1/00; B05B11/00