Contains information on Slide Projection Lamps, Condensing, Dichroic, 1.65 in. (42mm), Integral-Reflector, Rim Reference TH Lamps with GX5.3 Bases and Slide Projection Lamps, Condensing, Dichroic, Two-inch (51mm) Integral-Reflector, Rim Reference TH Lamp
ANSI C78.1430-1997 history
1997ANSI C78.1430-1997 Slide Projection Lamps, Condensing, Dichroic,1.65 in. (42 mm), Integral-Reflector, Rim Reference TH Lamps with GX5.3 Base