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DE578147C
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Process for roughening the surfaces of multi-part insulators to be connected to one another by cementing
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DE578134C
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Method and device for pulping raw materials of all kinds
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DE559388C
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Process to increase the thermal conductivity of steatite
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DE516599C
|
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Tap or gate valve
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DE570148C
|
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Process for regulating the devitrification of melts
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DE565947C
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Ceramic insulator
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DE548863C
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Process for the production of insulators from ceramic material
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DE566283C
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Process for the production of evacuated cavity insulators for electrical voltages made of ceramic material
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DE528175C
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Process for increasing the tensile strength of high-alumina glasses
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DE503001C
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Burglar and fire-proof safe
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DE637916C
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Process for reducing the expansion coefficient of steatite
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DE609806C
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Process for the production of ceramic masses resistant to alkali and alkali compounds
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DE487724C
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Manufacture of cordierites
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DE573030C
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Corrosion-resistant material for aluminum furnaces
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DE478493C
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Thermal protection device for industrial furnace and furnace systems
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DE487012C
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Synthesis of hexagonal minerals of the nepheline group
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DE489695C
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Process for the production of base-resistant diaphragms and filters
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DE476596C
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Hydrofluoric acid container
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DE635236C
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Process to prevent the aging of steatite, soapstone products of all kinds and other ceramic masses with magnesia components
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DE536799C
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Process to increase the base resistance of ceramic bodies of the three-component system
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