Rolf Hupka

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Flintbek, DE

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Patents Grantslast 30 patents

Information Patent Grant
Mode of operating of a circuit arrangement for improving the bounce...
- Patent number 5,036,403
- Issue date Jul 30, 1991
- Dr. Ing. Rudolf Hell GmbH
- Rolf Hupka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS