Title:
Vent construction
United States Patent 3192849
US Patent References:
Ventilating screen strip
- - 1651071

Automatic ventilator
- - 2474760

Ventilator
- - 2804006


Inventors:
Massengale, Richard D.
Publication Date:
07/06/1965
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Assignee:
Massengale, Richard D.
Primary Class:
454/276
Other Classes:
160/369
International Classes:
E06B7/08; E06B7/02
Foreign References:
CA640796A