Asking $70 plus shipping for this rare box of vintage General Electric Mazda Photoflash Lamps. Each bulb was tested with a multimeter and passed with continuity.
In 1909, the Mazda name was created for the tungsten filament light bulb. GE sold bulbs under this trademark starting in 1909. GE promoted the mark as identifying tungsten filament bulbs with predictable performance and life expectancy. GE also licensed the Mazda name, socket sizes, and tungsten filament technology to other manufacturers to establish a standard for lighting. Bulbs were soon sold by many manufacturers with the Mazda name licensed from GE, including British Thomson-Houston in the United Kingdom, Toshiba in Japan, and GE's chief competitor, Westinghouse.
Tungsten-filament bulbs of the Mazda type were initially more costly than carbon-filament-bulbs, but were more efficient. Often, electrical utilities would trade new lamps for consumers' burned-out bulbs. In at least one case, the authority regulating energy rates required the utility to use only tungsten bulbs so as not to inflate customers' energy use.
The company dropped the campaign in 1945. GE's patents on the tungsten filament lamp expired in the late 1930s, and other forms of lighting were becoming more important than incandescent bulbs.[citation needed] GE stopped licensing the trademark to other manufacturers, although it continued to renew the trademark registration up to 1990. The registration on trademark no. 77,779 expired in 2000.
In 1909, the Mazda name was created for the tungsten filament light bulb. GE sold bulbs under this trademark starting in 1909. GE promoted the mark as identifying tungsten filament bulbs with predictable performance and life expectancy. GE also licensed the Mazda name, socket sizes, and tungsten filament technology to other manufacturers to establish a standard for lighting. Bulbs were soon sold by many manufacturers with the Mazda name licensed from GE, including British Thomson-Houston in the United Kingdom, Toshiba in Japan, and GE's chief competitor, Westinghouse.
Tungsten-filament bulbs of the Mazda type were initially more costly than carbon-filament-bulbs, but were more efficient. Often, electrical utilities would trade new lamps for consumers' burned-out bulbs. In at least one case, the authority regulating energy rates required the utility to use only tungsten bulbs so as not to inflate customers' energy use.
The company dropped the campaign in 1945. GE's patents on the tungsten filament lamp expired in the late 1930s, and other forms of lighting were becoming more important than incandescent bulbs.[citation needed] GE stopped licensing the trademark to other manufacturers, although it continued to renew the trademark registration up to 1990. The registration on trademark no. 77,779 expired in 2000.
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