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3379328
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Patent number 3,379,328
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Issue date Apr 23, 1968
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3339775
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Patent number 3,339,775
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Issue date Sep 5, 1967
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2416672
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Patent number 2,416,672
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Issue date Mar 4, 1947
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2068881
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Patent number 2,068,881
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Issue date Jan 26, 1937
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1920018
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Patent number 1,920,018
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Issue date Jul 25, 1933
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1625869
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Patent number 1,625,869
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Issue date Apr 26, 1927
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1543554
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Patent number 1,543,554
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Issue date Jun 23, 1925
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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797410
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Patent number 797,410
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Issue date Aug 15, 1905
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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673560
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Patent number 673,560
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Issue date May 7, 1901
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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670228
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Patent number 670,228
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Issue date Mar 19, 1901
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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625591
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Patent number 625,591
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Issue date May 23, 1899
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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625592
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Patent number 625,592
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Issue date May 23, 1899
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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590496
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Patent number 590,496
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Issue date Sep 21, 1897
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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518381
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Patent number 518,381
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Issue date Apr 17, 1894
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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488612
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Patent number 488,612
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Issue date Dec 27, 1892
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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448854
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Patent number 448,854
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Issue date Mar 24, 1891
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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378177
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Patent number 378,177
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Issue date Feb 21, 1888
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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351527
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Patent number 351,527
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Issue date Oct 26, 1886
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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351653
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Patent number 351,653
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Issue date Oct 26, 1886
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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314428
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Patent number 314,428
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Issue date Mar 24, 1885
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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298362
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Patent number 298,362
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Issue date May 13, 1884
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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261907
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Patent number 261,907
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Issue date Aug 1, 1882
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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211395
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Patent number 211,395
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Issue date Jan 14, 1879
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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167650
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Patent number 167,650
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Issue date Sep 14, 1875
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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166076
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Patent number 166,076
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Issue date Jul 27, 1875
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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166075
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Patent number 166,075
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Issue date Jul 27, 1875
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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164246
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Patent number 164,246
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Issue date Jun 8, 1875
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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164245
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Patent number 164,245
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Issue date Jun 8, 1875
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...