Heat protective sheathing
United States Patent 3092530
Inventors:
Plummer, Walter A.
Publication Date:
06/04/1963
Assignee:
Plummer, Walter A.
Other Classes:
138/166, 174/DIG.011, 428/920, 428/192, 174/68.300
International Classes:
F16L59/02; F16L59/10