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Integrated front projection system
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Patent number 6,485,146
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Issue date Nov 26, 2002
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3M Innovative Properties Company
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Ernesto M. Rodriguez
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Integrated front projection system
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Patent number 6,394,609
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Issue date May 28, 2002
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3M Innovative Properties Company
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Ernesto M. Rodriguez
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Projection wall system
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Patent number D442205
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Issue date May 15, 2001
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3M Innovative Properties Company
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Ernesto M. Rodriguez
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D16 - Photography and optical equipment
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Integrated front projection system
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Patent number 6,179,426
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Issue date Jan 30, 2001
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3M Innovative Properties Company
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Ernesto M. Rodriguez
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Integrated projection system
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Patent number D430189
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Issue date Aug 29, 2000
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3M Innovative Properties Company
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Ernesto M. Rodriguez
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D16 - Photography and optical equipment
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Folding arm for overhead projector
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Patent number 4,978,218
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Issue date Dec 18, 1990
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Minnesota Mining and Manufacturing Company
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Robert S. Carpenter
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY