Automatic window-screen
United States Patent 1329929

Inventors:
Walter, Sandberg
Publication Date:
02/03/1920
View Patent Images:
Download PDF 1329929 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Walter, Sandberg
Primary Class:
160/28
Other Classes:
160/312, 160/DIG.011, 160/273.100, 160/100, 160/271
International Classes:
E06B9/54; E06B9/66; E06B9/52; E06B9/56