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US2710055A
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Thermoelectrically operated safety devices
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US2686112A
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Method and apparatus for producing oil fog in gas mains
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US2579042A
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Differential relay sensitivity adjuster
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US2569397A
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Electrical energizing means for limit control devices and the like
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US2583505A
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Mercury switch with alignment responsive means
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US2529445A
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Material feeding device
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US2561258A
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Flexible rotary agitator for hoppers with variable eccentric mountings and spaced weights
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US2573535A
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Coal handling system
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US2473465A
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Apparatus for improving the operation of oxygen cutting torches
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US2399979A
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Method for improving the operation of oxygen cutting torches
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US2356812A
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Starting switch for electrical discharge lamps
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US2356813A
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Starting switch for electrical discharge lamps
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US2400384A
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Thermoelectric generator and circuit
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US2336785A
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Method for the prevention of sulphate deposits on glass
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US2482238A
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Gas burner with thermocouple
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US2299149A
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Method of removing organic sulphur from gases or vapors
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US2275340A
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Resetting means for safety shutoff devices
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US2288433A
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Welding joint
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US2266642A
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Safety device for gas appliances
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US2288715A
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Pilot burner control
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