Title:
RING-SHAPED FLUORESCENT LAMP WITH NON-CIRCULAR CROSS SECTION
Document Type and Number:
Japanese Patent JPS52146072
Kind Code:
A
Abstract:
PURPOSE: To improve luminous efficiency by sealing in inert gas with krypton as its core in a ring-shaped fluorescent lamp with non-circle cross section.
Inventors:
KODAMA TADAYOSHI
HIROTA TAISUKE
HIROTA TAISUKE
Application Number:
JP6115776A
Publication Date:
December 05, 1977
Filing Date:
May 28, 1976
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H01J61/16; H01J61/12; H01J61/30; (IPC1-7): H01J61/12; H01J61/30