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3633399
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Patent number 3,633,399
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Issue date Jan 11, 1972
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3596487
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Patent number 3,596,487
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Issue date Aug 3, 1971
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3422654
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Patent number 3,422,654
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Issue date Jan 21, 1969
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3363443
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Patent number 3,363,443
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Issue date Jan 16, 1968
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2133090
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Patent number 2,133,090
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Issue date Oct 11, 1938
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2090463
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Patent number 2,090,463
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Issue date Aug 17, 1937
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2040169
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Patent number 2,040,169
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Issue date May 12, 1936
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2034264
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Patent number 2,034,264
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Issue date Mar 17, 1936
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2005325
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Patent number 2,005,325
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Issue date Jun 18, 1935
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1955551
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Patent number 1,955,551
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Issue date Apr 17, 1934
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1925979
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Patent number 1,925,979
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Issue date Sep 5, 1933
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1901702
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Patent number 1,901,702
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Issue date Mar 14, 1933
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1837107
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Patent number 1,837,107
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Issue date Dec 15, 1931
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1796745
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Patent number 1,796,745
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Issue date Mar 17, 1931
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1792793
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Patent number 1,792,793
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Issue date Feb 17, 1931
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1773463
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Patent number 1,773,463
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1755356
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Patent number 1,755,356
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1532607
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Patent number 1,532,607
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent number 1,487,819
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1479552
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Patent number 1,479,552
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Issue date Jan 1, 1924
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1343652
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Patent number 1,343,652
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Issue date Jun 15, 1920
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...