with exchangeable cutter bits or cutter segments

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Patents Grantslast 30 patents

Information Patent Grant
2981248
- Patent number 2,981,248
- Issue date Apr 25, 1961
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
2969053
- Patent number 2,969,053
- Issue date Jan 24, 1961
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
2775236
- Patent number 2,775,236
- Issue date Dec 25, 1956
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
2600570
- Patent number 2,600,570
- Issue date Jun 17, 1952
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
1620454
- Patent number 1,620,454
- Issue date Mar 8, 1927
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
1545448
- Patent number 1,545,448
- Issue date Jul 7, 1925
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
107847
- Patent number 107,847
- Issue date Sep 27, 1870
- B28 - WORKING CEMENT, CLAY, OR STONE