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CPC
Y10S165/339
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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
Y10
USPC classification
Y10S
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S165/00
Heat exchange
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Y10S165/339
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Patents Grants
last 30 patents
Information
Patent Grant
413097
Patent number
413,097
Issue date
Oct 15, 1889
F24 - HEATING RANGES VENTILATING
Patents Applications
last 30 patents