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Richard Voss
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Schwerte, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Support prop with integrated pressure limiting valve and nailed pipes
Patent number
5,611,646
Issue date
Mar 18, 1997
Richard Voss Grubenausbau GmbH
Richard Voss
E21 - EARTH DRILLING MINING
Information
Patent Grant
Pressure-compensated pressure limiting valve
Patent number
5,462,076
Issue date
Oct 31, 1995
Richard Voss Grubenausbau GmbH
Richard Voss
E21 - EARTH DRILLING MINING
Information
Patent Grant
High-capacity pressure limiting valve
Patent number
5,400,817
Issue date
Mar 28, 1995
Richard Voss Grubenausbau GmbH
Richard Voss
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Pressure limiting valve with replacement control valve
Patent number
5,396,924
Issue date
Mar 14, 1995
Richard Voss Grubenausbau GmbH
Richard Voss
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Individual hydraulic prop with filling/drawing valve and pressure f...
Patent number
5,297,901
Issue date
Mar 29, 1994
Grubenausbau GmbH
Richard Voss
E21 - EARTH DRILLING MINING
Information
Patent Grant
Pressure-relief valve with stepped or double piston
Patent number
5,215,116
Issue date
Jun 1, 1993
Richard Voss Grubenausbau GmbH
Richard Voss
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Pressure-relief valve with stepped or double piston
Patent number
5,180,443
Issue date
Jan 19, 1993
Richard Voss Grubenausbau GmbH
Richard Voss
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Pressure-relief valve with teflon seal
Patent number
5,168,895
Issue date
Dec 8, 1992
Richard Voss Grubenausbau GmbH
Richard Voss
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Information
Patent Application
Prop device for mining and tunnel construction
Publication number
20020031407
Publication date
Mar 14, 2002
Richard Voss
E21 - EARTH DRILLING MINING