Gas-circulating means
United States Patent 3363532
US Patent References:
Expander silencer unit
- - 2807329

Traveling cleaner
- - 3004277

Multiple air screen for use with a doorway
- - 3229609


Inventors:
Horneff, James P.
Publication Date:
01/16/1968
View Patent Images:
Download PDF 3363532 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Primary Class:
454/187
Other Classes:
454/269, 454/251, 454/296
International Classes:
F24F7/10; F24F13/068; F24F13/06