Title:
Indicating and controlling system
United States Patent 1877810

Inventors:
Chamberlain, Leon H.
Publication Date:
09/20/1932
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Assignee:
WATERWORKS SUPPLY COMPANY
Primary Class:
137/486
Other Classes:
137/557, 73/861.440, 137/552, 137/488, 340/870.430, 73/712
International Classes:
G01F1/37; G01F1/34