Title:
Insulated hollow building panel
United States Patent 2770965
US Patent References:
Glass mosaic
- - 1485753

Concrete construction
- - 1587500

Hollow steel building structure
- - 2089893

Insulated tile unit and structure
- - 2097892

Hollow glass building block
- - 2272061


Inventors:
David, Engel
Publication Date:
11/20/1956
View Patent Images:
Download PDF 2770965 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
David, Engel
Primary Class:
52/405.100
Other Classes:
52/569
International Classes:
E04C2/284; E04C2/32; E04C2/26
Foreign References:
GB259706A