Title:
Heat insulating material
United States Patent 1980889


Inventors:
Miller, Thomson George
Application Number:
US58250931A
Publication Date:
11/13/1934
Filing Date:
12/21/1931
Assignee:
Miller, Thomson George
Primary Class:
Other Classes:
106/DIG.3, 252/378R
International Classes:
C04B30/00
View Patent Images: