Perfectionnements aux dispositifs de fermeture pour des boîtes à lettres

申请公布号：FR1491277(A)

申请号：FR19666947175

申请日期：1966.04.18

申请公布日期：1967.08.11

发明人：HARDY FRED

分类号：A47G29/126

主分类号：A47G29/126

Axially movable coupling

Improvements in and relating to optical interferometers

Mixing apparatus

Reactive azo dyestuffs and processes for their production

Improvements in or relating to tanks for the transport and storing of liquefied gas

Refrigerators having ice block makers

Crystalline copolymers

Steam generator adapted to be heated by reactor water from a nuclear reactor

Sealed magnetic reed contact unit and method of manufacture thereof

Apparatus and a method for avoiding collisions between vehicles moving on predetermined paths

Polyitaconic anhydride and process for preparing polyitaconic anhydride and polyitaconic acid

Multiple unsaturated compounds and process for the preparation thereof

Improvements in or relating to shears

Improvements in or relating to a process of machining by electro-erosion

Electrical sensing apparatus

Device for mixing and dispensing flowable materials

Improvements in or relating to intermediate drives for conveyors

Resins

Improvements relating to baling presses

Comparator circuit