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Auger bit having a replaceable tip
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Patent number 5,820,319
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Issue date Oct 13, 1998
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Harold L. Hull
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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Gun muzzle brake
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Patent number 5,811,714
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Issue date Sep 22, 1998
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Harold L. Hull
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F41 - WEAPONS
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Combination piston and rod
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Patent number 5,682,853
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Issue date Nov 4, 1997
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Harold L. Hull
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Self-cleaning filter system
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Patent number 5,516,426
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Issue date May 14, 1996
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Harold L. Hull
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Ergonomic hand grip
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Patent number 5,440,784
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Issue date Aug 15, 1995
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Harold L. Hull
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Portable door lock
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Patent number 5,415,444
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Issue date May 16, 1995
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Harold L. Hull
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Dent removing pneumatic puller
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Patent number 5,408,861
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Issue date Apr 25, 1995
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Paul R. McCain
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Handle
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Patent number D356021
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Issue date Mar 7, 1995
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Harold L. Hull
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D08 - Tools and hardware
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Handle
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Patent number D355831
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Issue date Feb 28, 1995
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Harold L. Hull
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D08 - Tools and hardware
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