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Koninklijke Philips NV

Koninklijk

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2258643A	Distortion correction for cathode ray tubes	Expired / Lapsed	1939-04-22	1941-10-14	0	Details
US2173904A	Electrode system of unsymmetrical conductivity	Expired / Lapsed	1936-03-04	1939-09-26	0	Details
US2061011A	Circuit arrangement for electrical time control	Expired / Lapsed	1933-07-16	1936-11-17	0	Details
US1904276A	Dry rectifier	Expired / Lapsed	1931-01-22	1933-04-18	0	Details