4. Recorders
  5. Record receivers and/or driving means therefor

Wm F. Porter, Jr.

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3-Dimensional digitizer pen

Telegraphy – Systems – Position coordinate determination for writing
Patent

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All plastic idler pulley assembly

Endless belt power transmission systems or components – Friction drive pulley or guide roll
Patent

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Automatic tracking and scanning cursor for digitizers

Coded data generation or conversion – Bodily actuated code generator
Patent

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Cable retention system

Metal working – Method of mechanical manufacture – Assembling or joining
Patent

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Cam operated cutter for roll-fed pen plotters

Recorders – Markers and/or driving means therefor – Stylus feature
Patent

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Profile ID: LFUS-PAI-P-155590

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