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Title:
Boiler-feed water heater
Document Type and Number:
United States Patent 1478855
Inventors:
Wilhelm, Hildebrand
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Sponsored by:
Flash of Genius
Publication Date:
12/25/1923
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Assignee:
Handel, Maatchappij Albert H. DE.
Primary Class:
165/78
International Classes:
F22D1/32
;
F22D1/00
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