Opening box for concrete structure

Opening box for concrete structure

  • CN 101,063,342 A
  • Filed: 04/29/2006
  • Published: 10/31/2007
  • Est. Priority Date: 04/29/2006
  • Status: Active Application
First Claim
Patent Images

1. , a kind of opening box for concrete structure comprises boxboard (1), quadrangle mould (2), it is characterized in that quadrangle mould (2) is soft mode (3) at least on one side, has at least one shape keeping piece (4) to support soft mode.

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