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United States Utility Patents
3,948,240 - 3,948,249

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NumberTitle
3,948,240 Automatic choke valve apparatus for an internal combustion engine
3,948,241 Lubricating and sealing system for internal combustion engines
3,948,242 Ball throwing machine with oscillating means
3,948,243 Bow string drawing and releasing device
3,948,244 Vapor transfer oven
3,948,245 Combined device for producing and exchanging heat with a heat consuming device
3,948,246 Heater for sports benches
3,948,247 Solar heat-collector device
3,948,248 Method of measuring ocular pulse
3,948,249 Method and apparatus for detecting and identifying a cow in heat



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