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Engine breaker
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Patent number 7,124,840
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Issue date Oct 24, 2006
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Yamada Machinery Industrial Co., Ltd.
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Shigeru Miyakawa
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Rotary impacting apparatus
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Patent number 6,250,401
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Issue date Jun 26, 2001
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Yamada Machinery Industrial Co., Ltd.
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Sakuji Yamada
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Rotary impacting apparatus
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Patent number 6,192,995
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Issue date Feb 27, 2001
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Yamada Machinery Industrial Co., Ltd.
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Sakuji Yamada
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Portable power tool
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Patent number 4,848,846
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Issue date Jul 18, 1989
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Yamada Machinery Industrial Co., Ltd.
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Akio Yamada
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Portable power operated tool
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Patent number 4,179,805
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Issue date Dec 25, 1979
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Yamada Machinery Industrial Co., Ltd.
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Sakuji Yamada
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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78260802 - BEAGUN
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Serial number 78260802
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Registration number 2978922
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Filing date Jun 11, 2003
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Yamada Machinery Industrial Co., Ltd.
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7 - Machines and machine tools