Patent classifications
D
TEXTILES; PAPER
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D21
PAPER-MAKING; PRODUCTION OF CELLULOSE
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D21F
PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
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5/00
Dryer section of machines for making continuous webs of paper
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D21F5/001
Drying webs by radiant heating
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D21F5/002
from infrared-emitting elements
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