4. Metal working
  5. Method of mechanical manufacture
  6. Electrical device making

Charles R. S. Walker

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Integral transmitter and modular jack assembly for a telephone s

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer
Patent

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Method of manufacturing electrical receptacles

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

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Simplified line switch for a telephone set

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Snap-together enclosure for a telephone jack receptacle

Electrical connectors – With contact preventer or retractable cover part – Movably mounted
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Profile ID: LFUS-PAI-P-249221

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