4. Locks
  5. Operating mechanism
  6. Key

Roy N. Oliver

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Cylinder lock

Locks – Operating mechanism – Key
Patent

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Cylinder lock

Locks – Operating mechanism – Key
Patent

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Guard for key cylinder

Locks – Operating mechanism – Key
Patent

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Key for an improved twisting tumbler cylinder lock

Locks – Operating mechanism – Key
Patent

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Padlock closure

Locks – Portable – Padlocks
Patent

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Profile ID: LFUS-PAI-P-663021

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