Title:
Ventilating device
United States Patent 2513056
US Patent References:
/0170852.html
- - 0170852

/0180841.html
- - 0180841

/0255608.html
- - 0255608

/0376770.html
- - 0376770

Louver ventilator
- - 1640588


Inventors:
Scallon, Frank J.
Publication Date:
06/27/1950
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Assignee:
Scallon, Frank J.
Primary Class:
454/283
Other Classes:
160/104, D23/388, 454/280
International Classes:
E04B1/70; E04D13/152; E04D13/17; F24F7/00; E04D13/00; E04D13/15
US Patent References:
1677421Louver ventilator
1766876Ventilator for buildings
1774352Air cleaner
1907928Ventilating unit
2395619Special louver-type ventilator for ship portholes
Foreign References:
GB499691A