Ventilating body or screen
United States Patent 2441819
US Patent References:
/0768514.html
- - 0768514

Air filter
- - 2019186

Screen
- - 2294966

Structural material
- - 2369006


Inventors:
Jensen, Herbert R.
Publication Date:
05/18/1948
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Assignee:
Jensen, Herbert R.
Primary Class:
160/133
Other Classes:
160/238, 160/DIG.007
International Classes:
E06B9/24