Title:
Core block door construction
United States Patent 2822870
US Patent References:
Sound-insulating partition
- - 1540932
Door construction
- - 2020044
Framed panel and the manufacture thereof
- - 2695664
Sound-insulating partition
- - 1540932
Door construction
- - 2020044
Framed panel and the manufacture thereof
- - 2695664
Inventors:
Haynes, John W.
Publication Date:
02/11/1958
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Export Citation:
Assignee:
Haynes, John W.
Primary Class:
Other Classes:
52/455
International Classes:
E06B3/74; E06B3/70; E06B3/72