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Rolling bearing
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Patent number 10,995,798
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Issue date May 4, 2021
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NSK Ltd.
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Tsutomu Sato
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3420755
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Patent number 3,420,755
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Issue date Jan 7, 1969
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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1869412
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Patent number 1,869,412
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Issue date Aug 2, 1932
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1747394
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Patent number 1,747,394
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Issue date Feb 18, 1930
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E21 - EARTH DRILLING MINING
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1606159
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Patent number 1,606,159
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Issue date Nov 9, 1926
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...