Kraffczyk; Friedrich
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kraffczyk; Friedrich.The latest application filed is for "reaction chamber unit for test strips".
- Kraffczyk; Friedrich - Darmstadt DT
| Patent | Date |
|---|---|
| Reaction chamber unit for test strips Grant 3,884,641 - Kraffczyk , et al. May 20, 1 | 1975-05-20 |
| Indicator for the determination of urea Grant 3,873,269 - Kraffczyk , et al. March 25, 1 | 1975-03-25 |
| Gel Chromatography Grant 3,657,117 - Pfitzner , et al. April 18, 1 | 1972-04-18 |
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