DE3808010A1
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Waste water purification process
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EP0129141A1
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Use of filtering paper for tea bags as a filter for frying pan covers, and frying filter so produced
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DE3321100A1
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Use of tea bag paper for frying filters
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DE3321114A1
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Frying filter
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DE3321113A1
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Frying filters
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DE3321112A1
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Frying filter as a covering for frying pans or similar vessels
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DE2758033A1
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Electric circuit for MIG or MAG welding - where mains transformer feeds thyristor bridge for short or spray arc welding
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DE2346956A1
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Simplified plasma cutting plant - with fixed cutting current, gas feed rate and gas compsn
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DE2346961A1
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Hand-held plasma arc burner - esp. for metal cutting, and needing no water-cooling
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DE2340335A1
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Tungsten inert gas welding machine - with auxiliary current source for arc striking parallel to triac controlled main source
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DE2046940A1
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Mig welding control - of wire feed rate proportional to arc voltage by quadruple
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