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High-speed explosive hammer
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Patent number 4,166,375
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Issue date Sep 4, 1979
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Georgy K. Stepantsov
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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High-speed explosion hammer
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Patent number 4,166,374
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Issue date Sep 4, 1979
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Georgy K. Stepantsov
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3827278
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Patent number 3,827,278
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Issue date Aug 6, 1974
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3776021
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Patent number 3,776,021
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Issue date Dec 4, 1973
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3679005
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Patent number 3,679,005
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Issue date Jul 25, 1972
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3552181
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Patent number 3,552,181
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Issue date Jan 5, 1971
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3526121
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Patent number 3,526,121
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Issue date Sep 1, 1970
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3381672
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Patent number 3,381,672
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Issue date May 7, 1968
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3329003
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Patent number 3,329,003
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Issue date Jul 4, 1967
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3320740
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Patent number 3,320,740
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Issue date May 23, 1967
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3303892
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Patent number 3,303,892
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Issue date Feb 14, 1967
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3286460
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Patent number 3,286,460
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Issue date Nov 22, 1966
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3253399
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Patent number 3,253,399
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Issue date May 31, 1966
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3042008
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Patent number 3,042,008
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Issue date Jul 3, 1962
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2934049
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Patent number 2,934,049
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Issue date Apr 26, 1960
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2804856
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Patent number 2,804,856
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Issue date Sep 3, 1957
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2792816
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Patent number 2,792,816
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Issue date May 21, 1957
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2740385
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Patent number 2,740,385
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Issue date Apr 3, 1956
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2691967
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Patent number 2,691,967
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Issue date Oct 19, 1954
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2633832
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Patent number 2,633,832
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Issue date Apr 7, 1953
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2149641
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Patent number 2,149,641
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Issue date Mar 7, 1939
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2093634
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Patent number 2,093,634
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Issue date Sep 21, 1937
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2030686
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Patent number 2,030,686
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Issue date Feb 11, 1936
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2030803
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Patent number 2,030,803
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Issue date Feb 11, 1936
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1444815
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Patent number 1,444,815
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Issue date Feb 13, 1923
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...