4. Metal working
  5. Piezoelectric device making

Peter Duffield

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Digital projection display system with external light source

Optics: image projectors – Cabinet encloses projector and one side of screen – Reflector between lamp and screen
Reexamination Certificate

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Method of making a printing head for an ink jet printer

Metal working – Piezoelectric device making
Patent

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Profile ID: LFUS-PAI-P-1937745

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