Mold and process of molding faced concrete blocks
United States Patent 1635093

Inventors:
Donald, Mcpherson
Schultz, Frederick B.
Publication Date:
07/05/1927
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Assignee:
KEYROID CEMENT BLOCK CO INC
Primary Class:
264/256
Other Classes:
249/140, 264/274, 249/170, 52/598, 264/DIG.057, 264/318
International Classes:
B28B7/00; B28B7/16; B28B19/00