Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F27
FURNACES; KILNS; OVENS; RETORTS
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F27B
FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
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7/00
Rotary-drum furnaces, i.e. horizontal or slightly inclined
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F27B7/20
Details, accessories or equipment specially adapted for rotary-drum furnaces
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F27B7/22
Rotary drums; Supports therefor
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F27B7/24
Seals between rotary and stationary parts
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