NBN C 71-399-1979
Lighting appliances and similar instruments, specification for circular threads for 14E and 27E lamp caps and lampshade support rings

Standard No.

NBN C 71-399-1979

Release Date

1979

Published By

BE-NBN

Latest

NBN C 71-399-1979

NBN C 71-399-1979 history

• 1979 NBN C 71-399-1979 Lighting appliances and similar instruments, specification for circular threads for 14E and 27E lamp caps and lampshade support rings