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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for acoustic supervision of adjustment operati...
Patent number
4,707,597
Issue date
Nov 17, 1987
Ing. Rudolf Hell GmbH
Joerg Schulz-Hennig
G02 - OPTICS
Information
Patent Grant
Method for the topically precise subsequent engraving of printing c...
Patent number
4,546,232
Issue date
Oct 8, 1985
Ing. Rudolf Hell GmbH
Siegfried Beisswenger
B44 - DECORATIVE ARTS
Information
Patent Grant
Method for producing printing forms with irregularly distributed pr...
Patent number
4,485,397
Issue date
Nov 27, 1984
Ing. Rudolf Hell GmbH
Karl Scheuter
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Arrangement for the point- and line-wise recording of image informa...
Patent number
4,439,022
Issue date
Mar 27, 1984
Ing. Rudolf Hell GmbH
Axel Gebhardt
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Apparatus and method for engraving with an electron beam
Patent number
4,393,295
Issue date
Jul 12, 1983
Ing. Rudolf Hell GmbH
Siegfried Beisswenger
B44 - DECORATIVE ARTS