Title:
Fire extinguishing sprinkler valve
United States Patent 1900632

Inventors:
Boardman, Alfred E.
Publication Date:
03/07/1933
View Patent Images:
Download PDF 1900632 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Boardman, Alfred E.
Primary Class:
169/17
Other Classes:
169/20
International Classes:
A62C35/64; A62C35/58