Eickhorst; Manfred
Patent Applications and Registrations
Patent applications and USPTO patent grants for Eickhorst; Manfred.The latest application filed is for "apparatus for the spectroscopical examination of light transmitting objects such as precious stones".
- Eickhorst; Manfred - 2 Hamburg 76 DT
- Eickhorst; Manfred - 2 Hamburg 22 DT
- Eickhorst; Manfred - Hamburg DT
- Eickhorst; Manfred - 2 Wedel/Holstein DT
| Patent | Date |
|---|---|
| Apparatus for the spectroscopical examination of light transmitting objects such as precious stones Grant 3,989,379 - Eickhorst November 2, 1 | 1976-11-02 |
| Analysis lamp, particularly for the examination of precious stones Grant 3,950,102 - Eickhorst April 13, 1 | 1976-04-13 |
| Box-like casing cell Grant 3,872,995 - Eickhorst March 25, 1 | 1975-03-25 |
| Method And Apparatus For Determining The Color Or Cut Diamonds Grant 3,794,424 - Eickhorst , et al. February 26, 1 | 1974-02-26 |
| Apparatus For Determining The Color Of Cut Diamonds Grant 3,610,756 - Lenzen , et al. October 5, 1 | 1971-10-05 |
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