Title:
Insulating material
United States Patent 2110470

Inventors:
Norton, Charles L.
Publication Date:
03/08/1938
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Assignee:
Norton, Charles L.
Primary Class:
252/62
Other Classes:
220/DIG.009, 428/403, 428/318.800, 220/592.250, 428/312.600, 220/902, 217/128, 156/77, 423/332
International Classes:
E04B1/74; F16L59/08