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Method for hardening metallic elements
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Patent number 5,549,809
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Issue date Aug 27, 1996
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Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "SNECMA"
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Eric L. P. Barreau
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B22 - CASTING POWDER METALLURGY
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Adjustable window covering cord lock
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Patent number 4,719,956
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Issue date Jan 19, 1988
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Beatrice Companies
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Louis G. Valle
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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3875634
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Patent number 3,875,634
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Issue date Apr 8, 1975
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3701677
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Patent number 3,701,677
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Issue date Oct 31, 1972
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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3672038
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Patent number 3,672,038
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Issue date Jun 27, 1972
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3654692
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Patent number 3,654,692
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Issue date Apr 11, 1972
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3625039
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Patent number 3,625,039
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Issue date Dec 7, 1971
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C21 - METALLURGY OF IRON
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3073022
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Patent number 3,073,022
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Issue date Jan 15, 1963
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C21 - METALLURGY OF IRON
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3002865
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Patent number 3,002,865
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C21 - METALLURGY OF IRON
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2661643
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Issue date Dec 8, 1953
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2640002
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Patent number 2,640,002
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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2608752
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Patent number 2,608,752
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Issue date Sep 2, 1952
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2422431
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Patent number 2,422,431
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Issue date Jun 17, 1947
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B24 - GRINDING POLISHING
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2378588
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Patent number 2,378,588
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Issue date Jun 19, 1945
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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2351726
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Patent number 2,351,726
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Issue date Jun 20, 1944
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C21 - METALLURGY OF IRON
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2272686
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Patent number 2,272,686
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Issue date Feb 10, 1942
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B24 - GRINDING POLISHING
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2248530
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Patent number 2,248,530
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Issue date Jul 8, 1941
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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2129253
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Patent number 2,129,253
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Issue date Sep 6, 1938
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B24 - GRINDING POLISHING
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1977268
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Patent number 1,977,268
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Issue date Oct 16, 1934
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F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS