首页
产品
黄页
商标
征信
会员服务
注册
登录
全部
|
企业名
|
法人/股东/高管
|
品牌/产品
|
地址
|
经营范围
发明名称
Gesteinsbohrer
摘要
申请公布号
DE2041985(B1)
申请公布日期
1971.06.24
申请号
DE19702041985
申请日期
1970.08.25
申请人
WERKZEUGBAU GMBH
发明人
BOEHM,OTTO;SCHOLZ,WERNER
分类号
E21B17/22
主分类号
E21B17/22
代理机构
代理人
主权项
地址
您可能感兴趣的专利
DISPOSITIF SEMI-CONDUCTEUR
KJETTINGSTOPPER FOR EN RUNDJERNSKJETTING SPESIELT SKIPSANKERKJETTING
FREMGANGSM}TE OG INNRETNING TIL BANELEGGING AV SLITTE GUMMIDEKK
PRODUIT DE DISSOCIATION DU VIRUS DE LA RAGE, SON PROCEDE D'OBTENTION ET VACCIN LE CONTENANT
PROCEDE ET EQUIPEMENT POUR LE TRAITEMENT DU LAITIER METALLURGIQUE FERRUGINEUX
Baseband receiver for baseband vocoder - ensures synchronisation by processing pilot and sync. signals in specified way
Fireguard for ventilation ducts - has thermal fuse to automatically close flap under action of excessive heat
Non-stick surgical dressing of nonwoven fabric - pref. contg. 20-30 per cent polyester and 80-70 per cent viscose fibres
Gas permeable foil for packing food - is partly covered by layer of non permeable material applied in various patterns
Load bearing light weight insulating concrete - comprising cement, fine insulant and hydrophobic additive, subsequently mixed with coarse insulant
Telephone listen in equipment - has bridge connections and switches allowing combinations of listen and speak
Forming homogeneously orientated liq. crystal films - by applying to the confining substrate an orienting surfactant e.g. a polyvinyl alcohol deriv.
Compact electroslag furnace with even number of supports - providing spaces to accommodate cables and cooling system hoses (SW 12.9.77)
Speed control for dental tool - uses flexible element in handle to control back pressure operating on pressure sensitive element to regulate speed
Flange for welding to double walled pipe - has chamfered inner and outer joints staggered for easy access
Crystallizer positioning and displacing appts. - ensures tilt free transfer of crystalliser from ingot in electroslag remelting furnace
Head rest for vehicle seat - has tubular frame with padding and cover held to seat by bolts
Swinging motion grinding mill - operates with large amplitude using coarse grains of material as grinding element
Flat instrument for manually applied electric massage - has a blade of a conductive elastomer, pref. carbon charged neoprene
PERFECTIONNEMENTS AUX VANNES D'ARRET, D'ETRANGLEMENT OU DE REGULATION
