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Walter Steigleder
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Stuttgart, DE
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last 30 patents
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Patent Grant
Helical spring and process for producing it
Patent number
4,773,633
Issue date
Sep 27, 1988
Deutsche Forschungs- und Versuchsanstalt fur Luft- und Raumfahrt e.V.
Bernhard Hinz
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patent Grant
Valve spring retainer and process for its production
Patent number
4,665,869
Issue date
May 19, 1987
Deutsch Forschungs- und Versuchsanstalt fur Luft- und Raumfahrt e.V.
Bernhard Hinz
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES