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Pilkington North America Inc

Pilkington

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US4934112A	Multiple head abrasive cutting of glass	Expired / Lapsed	1989-03-29	1990-06-19	18	Details
US3524426A	Apparatus for coating by thermal evaporation	Expired / Lapsed	1968-02-29	1970-08-18	0	Details
US1718347A	Grinding head	Expired / Lapsed	1925-07-02	1929-06-25	0	Details
US1653040A	Mirror	Expired / Lapsed	1926-04-30	1927-12-20	0	Details