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Brief Description/Derivation: National main classification
Detailed Description: Domestic or national main classification. Contains parsable character data, custom characters, or revision markers.
Content Model:
(PDAT)
Parent(s):
Attributes: None
Tag Minimization: Both the start- and end-tags are required for this element.
Markup Instructions: For U.S. patents, this is the original (OR) classification which is based on the primary claim of the invention.
Example Text:
<B521><PDAT>544 48</PDAT></B521>
Example Image:
