Hollow gypsum building block

Hollow gypsum building block

  • CN 2,282,568 Y
  • Filed: 12/06/1995
  • Issued: 05/27/1998
  • Est. Priority Date: 12/06/1995
  • Status: Active Grant
First Claim
Patent Images

1. , gypsum hollow block, four limits have convex-concave to build mouthful (1), (3), and inside evenly is furnished with circular hole (2), it is characterized in that circular hole diameter on one side diameter big, is little on one side.

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