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US3541841A
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Electromagnetic loading device
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US3502308A
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Wet type gas scrubber
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US3477881A
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Process for the formation of electric insulating coating on electric iron sheet
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US3535213A
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Method of surface-treating metals
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US3502164A
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Load variation measuring apparatus
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US3458918A
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Tuyere replacement apparatus
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US3494765A
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Weldable high strength structural steel not embrittled by stress-relieving annealings
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US3482964A
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Process of obtaining a granular charge for the blast furnace from a pyrite cinder and iron manufacture dust or powdered iron ore
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US3469403A
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Buttress type steel dam for collecting debris
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US3494763A
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Process for discharging unburned waste gas from oxygen top-blowing converter
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US3434606A
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Apparatus for carrying a converter or a container similar thereto
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US3496104A
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Cold rolling agent
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US3435968A
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Device for charging alloyed iron and secondary raw materials into a steelmaking furnace
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US3472071A
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Apparatus for high-accuracy and quickresponse detection of the calorific value of a gas
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US3454268A
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Direct heat-treating apparatus for hot-rolled wire rods
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US3505128A
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Aqueous metal-coating composition
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US3494019A
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Process for butt welding of irons and steels
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US3506499A
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Method of surface-treating zinc,aluminum and their alloys
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