ASA C78.257

R-40 Bulb (Hard Glass), Medium Skrirted Screw Base Incandescent Lamps

Org/Number IDASA C78.257
Alternate Organization ID / numberANSI NEMA
Version(s)1962
Bin #0503
CommentsSuperseded By: ANSI C78.21
StatusPresent
Record last updatedJune 20, 2022, 6:27 pm

This is not the most recent edition of this standard.

Newer edition note: 1981