NEN NVN ENV ISO 10303-21 : 1996
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
03-09-2013
12-01-2013
Defines an exchange structure format using a clear text encoding of product data for which the conceptual model is specified in the Express language. Also specifies the mapping from this language to the syntax of the exchange structure.
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