ISOLATORS FOR THE GAS-TIGHT SECTIONALIZATION OF FLUES AND DUCTS
United States Patent 3460457
US Patent References:
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- - 0434627


Inventors:
Lowe, Walter Max
Squirrell, Frederick
Publication Date:
08/12/1969
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Assignee:
THERMO TECHNICAL DEV LTD
Primary Class:
454/369
International Classes:
F16K3/02; F16K43/00; F16K3/02




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