Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1987-10-16
1988-05-31
Cooper, Jack
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
2523014P, 428690, C09K 11475
Patent
active
047483741
ABSTRACT:
Luminescent rare earth metal phosphate defined by the formula
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patent: 3488292 (1970-01-01), McAllister
patent: 3539857 (1970-11-01), Shaffer
patent: 3600324 (1971-08-01), Bril et al.
patent: 3634282 (1972-01-01), Denis et al.
patent: 3925674 (1975-12-01), D'Silva et al.
patent: 4423349 (1983-12-01), Nakajima et al.
Cooper Jack
Fox John C.
U.S. Philips Corporation
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