4. Locks
  5. Operating mechanism
  6. Key

John C. Corfield

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Calibrating components

Metal working – Method of mechanical manufacture – Electrical device making
Patent

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Electrical switches

Electricity: circuit makers and breakers – Electric switch details – Actuators
Patent

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Key-operated device for access control system

Locks – Operating mechanism – Key
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Profile ID: LFUS-PAI-P-607437

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