Title:
Ventilating system
Document Type and Number:
United States Patent 2172944
Inventors:
Forbush, Norris Ralph
Plaque It!
Sponsored by: Flash of Genius |
Publication Date:
09/12/1939
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Referenced by:
Export Citation:
Assignee:
BURGESS BATTERY CO
Primary Class:
Other Classes:
55/DIG.029, 454/296, 454/112, 454/185
International Classes:
B61D27/00