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William R. A. Ziegler
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Germantown, MD, US
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last 30 patents
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Patent Grant
Light-tight optical disk cartridge
Patent number
5,319,630
Issue date
Jun 7, 1994
Optex Corporation
Allen M. Earman
G11 - INFORMATION STORAGE
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Patent Grant
Optical disk structures for electron trapping optical memory media
Patent number
5,128,849
Issue date
Jul 7, 1992
Optex Corpoataion
Emerie I. Podraczky
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Patent Grant
Three laser optical disk drive system
Patent number
5,113,387
Issue date
May 12, 1992
Optex Corporation
Paul Goldsmith
G11 - INFORMATION STORAGE