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Patents Grantslast 30 patents

Information Patent Grant
2879575
- Patent number 2,879,575
- Issue date Mar 31, 1959
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
2652613
- Patent number 2,652,613
- Issue date Sep 22, 1953
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
2446061
- Patent number 2,446,061
- Issue date Jul 27, 1948
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
2431034
- Patent number 2,431,034
- Issue date Nov 18, 1947
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
2057466
- Patent number 2,057,466
- Issue date Oct 13, 1936
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
1995947
- Patent number 1,995,947
- Issue date Mar 26, 1935
- B28 - WORKING CEMENT, CLAY, OR STONE