Sprinkler
United States Patent 1938838

Inventors:
Jacobson, Nathan D.
Publication Date:
12/12/1933
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Assignee:
Jacobson, Nathan D.
Primary Class:
239/236
Other Classes:
239/246, D23/220, 239/DIG.001, 239/251
International Classes:
B05B3/04; B05B3/06; B05B3/02