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Holtronic, GmbH Patents
Holtronic, GmbH
Erding, DE
No. of patents:

Patent Number Title Of Patent Date Issued
4989929 Process of making an achromatic hologram which is adapted to be reconstructed with white light February 5, 1991
A process is disclosed for making an achromatic hologram which is adapted to be reconstructed with white light and which is recorded on a photographic record carrier by means of an object beam and a reference beam of coherent monochromatic light in an operation in which the object be

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