Title:
Automatic window-screen
United States Patent 1329929
Inventors:
Walter, Sandberg
Publication Date:
02/03/1920
Export Citation:
Click for automatic bibliography generation
Assignee:
Walter, Sandberg
Primary Class:
160/28
Other Classes:
160/100, 160/271, 160/273.1, 160/312, 160/DIG.11
International Classes:
E06B9/54; E06B9/66; E06B9/52; E06B9/56
View Patent Images:
Download PDF 1329929        PDF help