Interlocking composition building block
United States Patent 2688245
US Patent References:
/RE22913.html
- - RE22913

/0474285.html
- - 0474285

/1282090.html
- - 1282090

Building-block
- - 1378735

Building block
- - 1545173


Inventors:
Vesper, George A.
Publication Date:
09/07/1954
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Assignee:
Vesper, George A.
Primary Class:
52/592.500
Other Classes:
52/302.400, D25/118, 52/591.200
International Classes:
E04B2/18; E04B2/02; E04B2/14
US Patent References:
1897659Method of forming silo tiles
2019653Building block
2124430Building construction and block therefor
2201110Brick or block
Foreign References:
GB190527177A
FR496022A