Helmut G. Sandner

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Nieder-Roden, DE

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Patents Grantslast 30 patents

Information Patent Grant
Supply apparatus for color-bearing film
- Patent number 5,314,133
- Issue date May 24, 1994
- E. I. Du Pont de Nemours and Company
- Helmut G. Sandner
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Layer transfer process for image production and apparatus to prefor...
- Patent number 5,227,826
- Issue date Jul 13, 1993
- E. I. Du Pont de Nemours and Company
- Helmut G. Sandner
- B32 - LAYERED PRODUCTS
Information Patent Grant
Apparatus for testing the color separations of a multicolor print
- Patent number 5,168,752
- Issue date Dec 8, 1992
- Windmoller & Holscher
- Herbert Konermann
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Layer transfer process for image production and apparatus to perfor...
- Patent number 5,155,010
- Issue date Oct 13, 1992
- E. I. Du Pont de Nemours and Company
- Helmut G. Sandner
- B32 - LAYERED PRODUCTS
Information Patent Grant
Image reproduction process using a negative tonable photohardenable...
- Patent number 4,238,561
- Issue date Dec 9, 1980
- E. I. Du Pont de Nemours and Company
- Mario Grossa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Negative tonable photohardenable element
- Patent number 4,203,770
- Issue date May 20, 1980
- E. I. Du Pont de Nemours and Company
- Mario Grossa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY