4. Expanded, threaded, driven, headed, tool-deformed, or locked-thr
  5. Having separate expander means
  6. Helical anchor

J. Frank Helderman

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Anchor apparatus for insertion into a pre-formed hole

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Helical anchor
Patent

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Method for removable anchor apparatus

Metal working – Method of mechanical manufacture – Assembling or joining
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Profile ID: LFUS-PAI-P-787555

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