with glowrod and candle

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Industry

CPC
H05B31/0033

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Parent Industries

HELECTRICITY H05Electric techniques H05BELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR H05B31/00Electric arc lamps

Current Industry

H05B31/0033with glowrod and candle

Industries

Patents Grantslast 30 patents

Information Patent Grant
1808164
- Patent number 1,808,164
- Issue date Jun 2, 1931
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
1802680
- Patent number 1,802,680
- Issue date Apr 28, 1931
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR