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Patent applications and USPTO patent grants for Bickel; Siegfried.The latest application filed is for "optical element for deflecting light beams and method of production".
Patent | Date |
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Optical element for deflecting light beams and method of production Grant 6,523,980 - Sejkora , et al. February 25, 2 | 2003-02-25 |
Optical element for deflecting light beams and method of production App 20010002878 - Sejkora, Gunther ;   et al. | 2001-06-07 |
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