Patent classifications
Y
GENERAL 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
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Y10
TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Y10T
TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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442/00
Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
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Y10T442/30
Woven fabric [i.e., woven strand or strip material]
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Y10T442/3472
Woven fabric including an additional woven fabric layer
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Y10T442/3528
Three or more fabric layers
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Y10T442/3537
One of which is a nonwoven fabric layer
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