for corrugating, profiling or the like of plates such as asbestos cement sheets

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Patents Grantslast 30 patents

Information Patent Grant
System and method for forming surface designs in hard-setting mater...
- Patent number 11,654,593
- Issue date May 23, 2023
- Carnegie Mellon University
- Joshua David Bard
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Structural panels
- Patent number 4,134,243
- Issue date Jan 16, 1979
- Donald J. Fries
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
3764252
- Patent number 3,764,252
- Issue date Oct 9, 1973
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
3197536
- Patent number 3,197,536
- Issue date Jul 27, 1965
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
2207726
- Patent number 2,207,726
- Issue date Jul 16, 1940
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
1337254
- Patent number 1,337,254
- Issue date Apr 20, 1920
- B28 - WORKING CEMENT, CLAY, OR STONE