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Improvements in letter boxes and the like
申请公布号：GB883164(A)
申请号：GB19590022178
申请日期：1959.06.29
申请公布日期：1961.11.22
分类号：A47G29/126
主分类号：A47G29/126
Improvements in or relating to the manufacture of ammonia
Improvements in or relating to the production of esters of unsaturated alcohols
Method of refining a carbonaceous metal bath
Improvements in or relating to the production of resin-coated sheet material
Driving system for diesel-electric vehicles
Production of a depolariser composition for electric batteries
A device having pivoted shelves or platforms
Automatic cut-off nozzle for injection-moulding machines
Improvements in or relating to microwave lines
Process for the preparation of 4,4'-diaminodiphenylmethane
Novel betaine derivatives and hair washing preparation containing them