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United States Utility Patents
4,984,900 - 4,984,909

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NumberTitle
4,984,900 Mixer particularly for fibrous products
4,984,901 Magnetic recording disc having sector reference zone, device for reading same, and magnetooptical memory optoelectronic employing said device
4,984,902 Apparatus and method for compensating for errors in temperature measurement of semiconductor wafers during rapid thermal processing
4,984,903 Method of optically and remotely sensing subsurface water temperature
4,984,904 Apparatus for continuously measuring temperature of molten metal and method for making same
4,984,905 Temperature and pressure detecting type spark plug
4,984,906 Multi-purpose utility tote
4,984,907 Grease absorbent device
4,984,908 Pre-seal for magnetic liquid seal for an anti-friction bearing
4,984,909 Bearing device



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