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ANSI C78.391-2004 (S2022)
Electric Lamps - Characteristics of Subminiature Lamps of T1 and T1-3/4 Shapes
Sets forth the physical and electrical characteristics of those groups of subminiature incandescent lamps with T1 and T1-3/4 bulb shapes. Lamps with various base or termination configurations are included.
NEMA: National Electrical Manufacturers Association [nema]