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Niilo M. Hyytinen
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Reno, NV, US
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last 30 patents
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Patent Grant
Apparatus for making concrete brick having antique appearance
Patent number
4,229,156
Issue date
Oct 21, 1980
ABC Concrete Products
Niilo M. Hyytinen
B28 - WORKING CEMENT, CLAY, OR STONE
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Patent Grant
Method and apparatus for making concrete brick having antique appea...
Patent number
4,178,340
Issue date
Dec 11, 1979
A B C Concrete Products
Niilo M. Hyytinen
B28 - WORKING CEMENT, CLAY, OR STONE