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| Number | Title | Issue Date |
| 4735906 | Sensor having piezoelectric crystal for microgravimetric immunoassays A sensor and method for performing immunoassays using surface acoustic waves on a piezoelectric crystal is provided. A specific antigen or antibody is bonded to the surface of the piezoelectric crystal and its resonant frequency in a blank solution is det... | 04/05/1988 |
