Patent classifications
D
TEXTILES; PAPER
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D05
SEWING; EMBROIDERING; TUFTING
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D05B
SEWING
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1/00
General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
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D05B1/02
for making single-thread seams
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D05B1/06
Single chain-stitch seams
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