Bulb, one of a series illustrating the "Svea" glow lamp
One of a series of bulbs and components illustrating the manufacture of the "Svea" glow lamp; bulb with tube sealed in for exhausting air.
- Object Number:
- 1900-38/3/1
One of a series of bulbs and components illustrating the manufacture of the "Svea" glow lamp; bulb with tube sealed in for exhausting air and with copper and platinium tubes ready for mounting filaments.
One of a series of bulbs and components illustrating the manufacture of the "Svea" glow lamp; bulb with tube sealed in for exhausting air.
One of a series of bulbs and components illustrating the manufacture of the "Svea" glow lamp; bulb with tube sealed with copper and platinium tubes ready for mounting filaments.