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William N. Partlo
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Fairport, NY, US
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last 30 patents
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Patent Grant
Variable annular illuminator for photolithographic projection imager
Patent number
5,757,470
Issue date
May 26, 1998
General Signal Corporation
Paul G. Dewa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Patent Grant
Variable annular illuminator for photolithographic projection imager
Patent number
5,452,054
Issue date
Sep 19, 1995
General Signal Corporation
Paul G. Dewa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Patent Grant
Partial coherence varier for microlithographic system
Patent number
5,383,000
Issue date
Jan 17, 1995
General Signal Corporation
Paul F. Michaloski
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY