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J. F. Tonnies Erben K.G.
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Freiburg im Breisgau, DE
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Patent Grant
Method and device for representing electrical spatial lines and spa...
Patent number
4,292,977
Issue date
Oct 6, 1981
J. F. Tonnies Erben K.G.
Heinz Krause
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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