Interlocking hollow building block
United States Patent 2703487
US Patent References:
/0474285.html
- - 0474285

/0699587.html
- - 0699587

/1009469.html
- - 1009469

/1182980.html
- - 1182980

Building-block
- - 1369115


Inventors:
Andrea, Ossoinack
Publication Date:
03/08/1955
View Patent Images:
Download PDF 2703487 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Andrea, Ossoinack
Primary Class:
52/592.300
Other Classes:
D25/117, 52/607, D25/58
International Classes:
E04B2/30; E04B2/28
US Patent References:
1415197Concrete-tile construction
1681631Interlocking-brick construction
2321403Brick unit