Damper system
United States Patent 3322417
US Patent References:
/0662661.html
- - 0662661

Stack closure assembly for melting furnaces
- - 2674446

Metal holding receptacle
- - 3211443


Inventors:
John, Mitchell
Publication Date:
05/30/1967
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Assignee:
John, Mitchell
Primary Class:
432/250
Other Classes:
126/285A, 432/251, 432/252
International Classes:
F23L13/00; F27B17/00