Fire alarm box attachment
United States Patent 2020279

Inventors:
Long, Robert B.
Publication Date:
11/05/1935
View Patent Images:
Download PDF 2020279 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Long, Robert B.
Primary Class:
340/304
Other Classes:
D10/106
International Classes:
G08B25/12