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Rolls Royce Power Engineering PLC

Rolls Royc

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US5083989A	Drive transmissions	Expired / Lapsed	1990-05-02	1992-01-28	11	Details
US3644766A	Synchronous alternating current electrical machines	Expired / Lapsed	1970-08-07	1972-02-22	8	Details
US3511051A	Speed governing systems for steam turbines	Expired / Lapsed	1967-11-02	1970-05-12	0	Details
US3483869A	Surgical probes	Expired / Lapsed	1967-02-13	1969-12-16	0	Details
US3417754A	Ophthalmoscopes	Expired / Lapsed	1965-07-12	1968-12-24	0	Details