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| Number | Title | Issue Date |
| 4612291 | Method and apparatus for mixing serum and reagents for chemical analysis Method and apparatus for mixing serum and reagents for chemical analysis. The method comprises the steps of providing a container containing a serum sample and one or more reagents to be mixed, positioning an elongated mixing member within the containers ... | 09/16/1986 |
| 4504812 | Spherical transformer apparatus An improved transformer (20) and method of transformer construction. Primary and secondary windings (30 and 32) are spirally wound onto a spherically shaped core member (24). The core is preferably of laminated construction and can be of either planar or ... | 03/12/1985 |
