4. Education and demonstration
  5. Geography

Paul L. Pryor

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Bearing arrangement having magnetic attraction between sliders a

Bearings – Linear bearing – With detection – nonbearing magnetic or hydraulic feature
Patent

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Contrast control for lens

Photocopying – Projection printing and copying cameras – Illumination systems or details
Patent

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Locating system for maps and other diagrams and displays

Education and demonstration – Geography
Patent

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Multichannel masking camera and projector

Photocopying – Projection printing and copying cameras – Identifying – composing – or selecting
Patent

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Profile ID: LFUS-PAI-P-667078

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