FILAMENT LAMP Russian patent published in 1994 - IPC

Abstract RU 2007780 C1

FIELD: electrical engineering. SUBSTANCE: filament lamp is intended for lighting of homes and production facilities. It has envelope with luminous element positioned and sealed inside. Envelope is put into additional bulb. The latter is manufactured with double walls and is provided with heat insulation collar on side of base. Mirror layer is deposited on part of additional bulb. EFFECT: improved efficiency and reliability, facilitated manufacture. 2 cl, 1 dwg

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RU 2 007 780 C1

Authors

Bastrigin Jurij Vasil'Evich

Dates

1994-02-15—Published

1990-07-30—Filed