Electric lamp and discharge devices
With optical device or special ray transmissive envelope
Plural diverse optical devices
Examiner
active
No affiliations
Discharge tube with a specific amount of hydrogen gas by volume
Optical device, illumination apparatus using the device, and...
Optical device, illumination apparatus using the device, and...
Spark plug having center electrode with columnar portion and...
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Profile ID: LFUS-PAI-P-2391879