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Essen, DE
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last 30 patents
Information
Patent Grant
Shaking control unit for a hydraulic cylinder
Patent number
5,000,622
Issue date
Mar 19, 1991
Bochumer Eisenhutte Heintzmann GmbH & Co. KG
Siegmar Block
E21 - EARTH DRILLING MINING
Information
Patent Grant
Shaking control unit for a hydraulic cylinder
Patent number
4,907,918
Issue date
Mar 13, 1990
Bochumer Eisenhutte Heintzmann GmbH & Co. KG
Siegmar Block
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method of separating the upper coal in seams
Patent number
4,798,417
Issue date
Jan 17, 1989
Bochumer Eisenhutte Heintzmann GmbH & Co. HG
Gunter Blumenthal
E21 - EARTH DRILLING MINING
Information
Patent Grant
Electrohydraulic three-port, two position valve
Patent number
4,529,006
Issue date
Jul 16, 1985
Bochumer Eisehutte Heitzmann GmbH & Co. KG
Siegmar Block
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Control device for an advancing support in underground mining
Patent number
4,379,662
Issue date
Apr 12, 1983
Thyssen Industrie AG
Siegmar Block
E21 - EARTH DRILLING MINING
Information
Patent Grant
Unlockable check valve, particularly for use as recovery and settin...
Patent number
4,361,075
Issue date
Nov 30, 1982
Thyssen Industrie AG
Siegmar Block
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information
Patent Grant
Excess pressure valve particularly for a fluid pressure operated te...
Patent number
4,274,435
Issue date
Jun 23, 1981
Thyssen Industrie AG
Siegmar Block
E21 - EARTH DRILLING MINING