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Rotary impact apparatus
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Patent number 4,805,706
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Issue date Feb 21, 1989
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Alan M. Stone
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Feed apparatus and method
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Patent number 4,365,717
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Issue date Dec 28, 1982
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Sphere Investments Limited
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Alan M. Stone
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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Fluid flow manifold
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Patent number 4,225,089
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Issue date Sep 30, 1980
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Sphere Investments Limited
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Alan M. Stone
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Valves
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Patent number 4,210,311
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Issue date Jul 1, 1980
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Sphere Investments Limited
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Alan M. Stone
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...