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Method for punching a cylindrical tube
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Issue date Jun 14, 1988
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Yamaha Hatsudoki Kabushiki Kaisha
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Hiroshi Yamagata
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Method of making a composite metal casting
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Patent number 4,023,613
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Issue date May 17, 1977
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Toyo Kogyo Co., Ltd.
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Yositaka Uebayasi
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3149383
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Patent number 3,149,383
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Issue date Sep 22, 1964
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B22 - CASTING POWDER METALLURGY
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2672666
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Patent number 2,672,666
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Issue date Mar 23, 1954
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B22 - CASTING POWDER METALLURGY
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2391615
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Patent number 2,391,615
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Issue date Dec 25, 1945
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B22 - CASTING POWDER METALLURGY
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2326418
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Patent number 2,326,418
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Issue date Aug 10, 1943
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B22 - CASTING POWDER METALLURGY
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2285811
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Patent number 2,285,811
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Issue date Jun 9, 1942
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B22 - CASTING POWDER METALLURGY
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2285812
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Patent number 2,285,812
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Issue date Jun 9, 1942
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B22 - CASTING POWDER METALLURGY
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2265243
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Patent number 2,265,243
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Issue date Dec 9, 1941
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B22 - CASTING POWDER METALLURGY
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2176773
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Patent number 2,176,773
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Issue date Oct 17, 1939
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B22 - CASTING POWDER METALLURGY
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1721878
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Patent number 1,721,878
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Issue date Jul 23, 1929
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B22 - CASTING POWDER METALLURGY
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1676976
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Patent number 1,676,976
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Issue date Jul 10, 1928
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B22 - CASTING POWDER METALLURGY
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1669071
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Patent number 1,669,071
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Issue date May 8, 1928
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B22 - CASTING POWDER METALLURGY
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1649274
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Patent number 1,649,274
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Issue date Nov 15, 1927
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B22 - CASTING POWDER METALLURGY
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1640876
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Issue date Aug 30, 1927
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B22 - CASTING POWDER METALLURGY
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1594446
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B22 - CASTING POWDER METALLURGY
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1572428
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B22 - CASTING POWDER METALLURGY
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1528947
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B22 - CASTING POWDER METALLURGY
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1512295
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Patent number 1,512,295
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B22 - CASTING POWDER METALLURGY
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1456855
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Patent number 1,456,855
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Issue date May 29, 1923
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B22 - CASTING POWDER METALLURGY
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1449637
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Patent number 1,449,637
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Issue date Mar 27, 1923
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B22 - CASTING POWDER METALLURGY