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| Number | Title | Issue Date |
| 4688426 | Hydrometer for determination of immunoglobulin content of mare colostrum A hydrometer for determination of immunoglobulin content of mare colostrum comprises a container having a top wall, side walls and an open bottom. An elongate, emergent stem is carried by and projects from the top wall, and the stem is provided with a sca... | 08/25/1987 |
| 4630481 | Method and instrument to estimate the weights of green trees and logs Method and apparatus to estimate the weight of the trees and logs in a stand of trees before harvesting to maximize the efficiency of aerial logging are disclosed. A hydrometer that has a chamber which accepts a small known volume core from the tree deter... | 12/23/1986 |
| 4287760 | Method and equipment to measure fat content of meat A method of measuring fat content of meat includes the steps of immersing a meat sample in a liquid, and detecting the amount of displacement of the liquid by the meat sample, the variance of such displacement as a function of fat content being predetermi... | 09/08/1981 |
| 4273744 | Device for automatic addition of a corrosion inhibitor to a coolant system A device for the automatic addition of corrosion inhibitor into an automobile coolant system when the coolant mixture is diluted by water having an undesirable level of corrosiveness. The device is in the form of a hydrometer having a hollow stem adapted ... | 06/16/1981 |
| 4186608 | Method and apparatus for verifying declared contents of contents of certain solids An apparatus and method are provided for verification of declared contents in mixed solids, blended textiles, certain pure solids, and other solid substances. The apparatus is assembled from laboratory items and utilizes liquids and instruments. The metho... | 02/05/1980 |
| 4000657 | Apparatus for measuring the apparent weight of a sludge charging a liquid Apparatus for measuring and monitoring the state of activated sludge in the continuous treatment of waste waters or sewage. A suspensoid is produced by clarifying a quantity of the sludge-charged liquid, and the apparent weight of the sludge relative to t... | 01/04/1977 |
