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Drum monochromator
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Patent number 4,084,909
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Issue date Apr 18, 1978
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International Business Machines Corporation
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Einar Skau Mathisen
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G01 - MEASURING TESTING
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Wide band grating spectrometer
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Patent number 4,060,327
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Issue date Nov 29, 1977
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International Business Machines Corporation
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Lawrence Jacobowitz
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G01 - MEASURING TESTING
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Spectrophotometer sample holder
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Patent number 3,986,778
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Issue date Oct 19, 1976
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International Business Machines Corporation
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Einar S. Mathisen
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G01 - MEASURING TESTING
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Automatic test sample handling system
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Patent number 3,985,507
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Issue date Oct 12, 1976
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International Business Machines Corporation
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Frank A. Litz
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL