TREA

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  • CPC
  • Y10T428/21
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Parent Industries

YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS Y10USPC classification Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION Y10T428/00Stock material or miscellaneous articles

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Y10T428/21Circular sheet or circular blank
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