4. Computer graphics processing and selective visual display system
  5. Display peripheral interface input device
  6. Light pen for fluid matrix display panel

Michael A. Helgeson

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Differential filter with gyrator

Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Unwanted signal suppression
Reexamination Certificate

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Handheld computer apparatus

Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
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Partitioned display apparatus

Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
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State validation using bi-directional wireless link

Communications: electrical – Selective – Monitoring in addition to control
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State validation using bi-directional wireless link

Communications: electrical – Selective – Interrogation response
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Profile ID: LFUS-PAI-P-1890958

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