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United States Utility Patents
4,308,850 - 4,308,859

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NumberTitle
4,308,850 Multiple elastic band projector
4,308,851 Bowstring draw and trigger release apparatus
4,308,852 Apparatus for sawing different materials
4,308,853 Forced hot air alimentary oven
4,308,854 Oil stove for burning waste oil and normal heating oil
4,308,855 Submerged burner furnace
4,308,856 Protection against the freezing of solar collectors
4,308,857 Evacuated envelope and solar energy receiver
4,308,858 Solar energy collecting apparatus and methods
4,308,859 Method of inhibiting mastitis in bovine animals



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