High pressure mercury vapor discharge lamp having improved elect

Details High pressure mercury vapor discharge lamp having improved elect High pressure mercury vapor discharge lamp having improved elect

1976-04-09

1977-08-23

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For plural electrodes of discharge device

313311, 313346R, H01J 1704, H01J 6106

Patent

active

040442764

ABSTRACT:
The emitter material on the electrode of a high intensity discharge lamp comprises hafnium oxide, barium oxide and calcium oxide.

REFERENCES:
patent: 2687489 (1954-08-01), Anderson, Jr. et al.
patent: 2843801 (1958-07-01), Krefft
patent: 3134924 (1964-05-01), Henderson et al.
patent: 3249788 (1966-05-01), Wainio et al.
patent: 3656020 (1972-04-01), Cronin
patent: 3742282 (1973-06-01), Siegle
patent: 3886391 (1975-05-01), Koury et al.
patent: 3922428 (1975-11-01), Cronin

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