4. Communications: electrical
  5. Digital comparator systems

Hans George Mattes

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Apparatus for reading optical codes

Registers – Calculators – Input-output calculator to indicator – printer – etc.
Patent

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Frequency translation to local multi-point distribution...

Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate

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Graphical input terminal

Telegraphy – Systems – Position coordinate determination for writing
Patent

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Terminal apparatus

Communications: electrical – Digital comparator systems
Patent

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Visual ring indicator

Patent

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Profile ID: LFUS-PAI-P-298777

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