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IPC Subgroup
F27D 21/02

Observation or illuminating devices

Introduced: September 1968

Last revised: January 2006

Full Title

Arrangement of monitoring devices; Arrangement of safety devices > Observation or illuminating devices

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
FURNACES; KILNS, OVENS OR RETORTS
Subclass:
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE

Related Keywords

INSPECTION apertures for furnaces