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United States Utility Patents
4,034,730 - 4,034,739

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NumberTitle
4,034,730 Closed loop carburetor air-fuel ratio control apparatus
4,034,731 Ignition system for an internal combustion engine
4,034,732 Non-incendive shut-down system for engine magnetos
4,034,733 Internal combustion engine
4,034,734 Tubeless heat exchangers
4,034,735 Solar energy system
4,034,736 Solar heating method and apparatus
4,034,737 Solar heat boiler
4,034,738 Solar heating system
4,034,739 Field sanitizing apparatus



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