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US5535501A
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Furnace and method for securing a thermostat to a furnace
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US5347981A
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Pilot pressure switch and method for controlling the operation of a furnace
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US5437263A
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High efficiency furnace method and apparatus
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US3332722A
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Mining machine having oscillated rotary drum in advance of spaced boring heads
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US3341254A
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Method and machine for mining with relatively shiftable pairs of obtuse angled drum cutters
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US3333899A
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Trimmer bar mounting for continuous mining machines
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US3355005A
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Loading device and method for transfer points
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US3279628A
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Furnace charger
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US3277993A
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Gathering head for loading apparatus
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US3347373A
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Oscillating screens
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US3317245A
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Propelling and steering system for mining machines
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US3250490A
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Hydraulic cable reel drive circuit
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US3250492A
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Automatic regulator for cable reel
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US3250491A
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Hydraulic cable reel drive circuit
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US3279861A
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Means and method of maintaining a full pneumatic conveying system receiver
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ES298567A1
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A conveyor device for bulk material (Machine-translation by Google Translate, not legally binding)
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US3279862A
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Conveying means and method
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US3256973A
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Flight conveyor
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US3196966A
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Weighing apparatus
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US3220273A
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Composite sprocket for continuous mining machine
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