Ventilating louver assembly
United States Patent 2962956
Inventors:
Louis, Magyar Louis
Publication Date:
12/06/1960
Assignee:
Acorn, Advertisers
Other Classes:
49/92.100, 52/342, 49/91.100
International Classes:
F24F13/08
US Patent References:
| 2842042 | Ventilator wall and window blocks | | | |