Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F28
HEAT EXCHANGE IN GENERAL
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F28F
DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
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11/00
Arrangements for sealing leaky tubes and conduits
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F28F11/02
using obturating elements, e.g. washers, inserted and operated independently of each other
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