Electric filter av plast och / eller metal, specific av bly.
DE3900552A1
ELECTRIC FILTERS IN PLASTIC AND / OR METAL, ESPECIALLY LEAD
DE3344121A1
Process for joining shaped parts of aluminium or aluminium alloys to shaped lead parts fitting them
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Joining glass-fibre-reinforced, laminated, plastics components - by cutting back successive plies to form steps which fit steps cut in opposite laminate end, and lap joining free end of reinforcements
DE2441470A1
Positive joint - for reinforced laminated components e.g. pipe sections, container walls with dovetail insert
DE2008454A1
Lead coated sheet manufacturing method
DE1926762A1
Lead coating of galvanized articles
DE1521168A1
Method and device for lead-coating of curved surfaces of metallic objects
DE1508777A1
Method and device for lead-coating of curved surfaces of metallic objects
DE1519562A1
Tube evaporator for aggressive liquids, especially sulfuric acid
