Helmut Keller

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Geisingen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Printer for data-processing machine having single operator station
- Patent number 4,141,660
- Issue date Feb 27, 1979
- Kienzle Apparate GmbH
- Hans Bommersheim
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS