Heat insulating and fireproof materials
United States Patent 2046494
Inventors:
Rolleghem, Robert Van
Publication Date:
07/07/1936
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Assignee:
Cie, Internationale Products DE.
Primary Class:
Other Classes:
106/18.120, 427/128, 106/18.110, 428/920, 252/608
International Classes:
C04B41/52; C04B41/45