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2577303
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Patent number 2,577,303
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Issue date Dec 4, 1951
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2537445
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Patent number 2,537,445
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Issue date Jan 9, 1951
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B28 - WORKING CEMENT, CLAY, OR STONE
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2531647
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Patent number 2,531,647
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Issue date Nov 28, 1950
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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2525029
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Patent number 2,525,029
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Issue date Oct 10, 1950
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2503889
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Patent number 2,503,889
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Issue date Apr 11, 1950
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B24 - GRINDING POLISHING
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2501738
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Patent number 2,501,738
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Issue date Mar 28, 1950
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2326638
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Patent number 2,326,638
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Issue date Aug 10, 1943
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2317495
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Patent number 2,317,495
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Issue date Apr 27, 1943
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2234153
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Patent number 2,234,153
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Issue date Mar 4, 1941
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2220425
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Patent number 2,220,425
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Issue date Nov 5, 1940
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2174984
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Patent number 2,174,984
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Issue date Oct 3, 1939
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1903114
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Patent number 1,903,114
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Issue date Mar 28, 1933
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1864307
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Patent number 1,864,307
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Issue date Jun 21, 1932
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1817798
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Patent number 1,817,798
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Issue date Aug 4, 1931
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1783960
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Patent number 1,783,960
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Issue date Dec 9, 1930
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B24 - GRINDING POLISHING
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1738646
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Patent number 1,738,646
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Issue date Dec 10, 1929
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1644379
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Patent number 1,644,379
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Issue date Oct 4, 1927
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B24 - GRINDING POLISHING
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1635702
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Patent number 1,635,702
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Issue date Jul 12, 1927
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1624180
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Patent number 1,624,180
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Issue date Apr 12, 1927
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1607292
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Patent number 1,607,292
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Issue date Nov 16, 1926
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B24 - GRINDING POLISHING
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1603949
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Patent number 1,603,949
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Issue date Oct 19, 1926
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B24 - GRINDING POLISHING
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1583807
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Patent number 1,583,807
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Issue date May 11, 1926
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B24 - GRINDING POLISHING
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1579688
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Patent number 1,579,688
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Issue date Apr 6, 1926
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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1549955
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Patent number 1,549,955
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Issue date Aug 18, 1925
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B24 - GRINDING POLISHING
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1529693
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Patent number 1,529,693
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Issue date Mar 17, 1925
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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1527693
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Patent number 1,527,693
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Issue date Feb 24, 1925
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1482433
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Patent number 1,482,433
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B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
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1233670
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Patent number 1,233,670
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Issue date Jul 17, 1917
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B24 - GRINDING POLISHING
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803304
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Patent number 803,304
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Issue date Oct 31, 1905
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B24 - GRINDING POLISHING