4. Locks
  5. Operating mechanism
  6. Using a powered device

Joseph W. Woolfson

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Magnetic lock

Locks – Operating mechanism – Using a powered device
Patent

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Magnetic lock

Locks – Operating mechanism – Using a powered device
Patent

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Sound muffling device for an air conditioning unit

Refrigeration – Muffler or sound dampener
Reexamination Certificate

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Profile ID: LFUS-PAI-P-871858

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