4. Machines not elsewhere specified
  5. Material working, abrading, or founding machinery
  6. Element or attachment

Joseph Marion Martin

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Magnetic chuck

Machines not elsewhere specified – Material working – abrading – or founding machinery – Element or attachment
Design Patent

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Magnetic chuck for unwinding of wire from a spool

Winding – tensioning – or guiding – Tension control or brake – Supply controlled
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2020519

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