BLOCK MAKING MACHINE
United States Patent 3426404

Inventors:
Yamasita, Keniti
Yamasita, Zyozi
Publication Date:
02/11/1969
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Assignee:
Keniti, Yamasita
Zyozi, Yamasita
Primary Class:
425/415
Other Classes:
425/421, 425/432, 425/434, 425/422, 425/424, 425/453
International Classes:
B28B3/02; B28B1/08
US Patent References:
2227756Building block casting machine
2235440Molding apparatus
2526198Machine for molding concrete blocks
2542584Concrete block molding machine
2583597Concrete block molding machine
3277551Concrete block molding machines
Foreign References:
CA711174A




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