4. Telegraphy
  5. Systems
  6. Position coordinate determination for writing

Antonius J. M. Hafkamp

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Force activated touch screen measuring deformation of the front

Telegraphy – Systems – Position coordinate determination for writing
Patent

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Telephone set with a detachable cordless control and display...

Telecommunications – Transmitter and receiver at same station – Convertible
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1599933

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