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Patents Grants
last 30 patents
Information
Patent Grant
Apparatus for producing paving blocks
Patent number
5,139,602
Issue date
Aug 18, 1992
Chichibu Cement Co., Ltd.
Shigeo Suda
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
System for making composite blocks
Patent number
5,080,750
Issue date
Jan 14, 1992
Chichibu Cement Co.
Atsutoshi Kurotaki
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Fracture-free layered paving blocks
Patent number
5,051,023
Issue date
Sep 24, 1991
Chichibu Cement Co., Ltd.
Kinoto Yoshida
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Method for production of paving blocks
Patent number
4,995,932
Issue date
Feb 26, 1991
Chichibu Cement Co., Ltd.
Kinoto Yoshida
B28 - WORKING CEMENT, CLAY, OR STONE
Patents Applications
last 30 patents
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last 30 trademarks
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90672191 - PA IS CA
Serial number
90672191
Registration number
6887236
Filing date
Apr 26, 2021
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