4. Expanded, threaded, driven, headed, tool-deformed, or locked-thr
  5. Having separate expander means
  6. With hole forming means

Hisayoshi Yamamoto

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Method of making a drill-shaped cutting tool and thread rolling

Metal tools and implements – making – Blank or process – Drill
Patent

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Screw head

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Elongated head – e.g. – hanger bolt – etc.
Patent

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Self-drilling anchor

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – With hole forming means
Patent

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Thread rolling die for self-tapping screw

Metal deforming – Tool and/or tool holder – Tool-comprising die plate having ribs and/or grooves
Patent

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Profile ID: LFUS-PAI-P-728566

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