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Area meter
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Patent number 4,472,057
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Issue date Sep 18, 1984
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Li-Cor, Inc.
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John H. Wurm
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Area meter
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Patent number 4,375,920
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Issue date Mar 8, 1983
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Li-Cor, Inc.
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John H. Wurm
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Light sensor
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Patent number 4,264,211
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Issue date Apr 28, 1981
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Li-Cor, Inc.
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William W. Biggs
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G01 - MEASURING TESTING
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Printing integrator
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Patent number 4,169,287
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Issue date Sep 25, 1979
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Lambda Instruments Company
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Lyle R. Middendorf
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G06 - COMPUTING CALCULATING COUNTING