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Patents Grants
last 30 patents
Information
Patent Grant
Quick-change ram boring head
Patent number
5,125,462
Issue date
Jun 30, 1992
Schmidt; Paul
Alfons Hesse
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information
Patent Grant
Ramming device
Patent number
5,110,237
Issue date
May 5, 1992
Schmidt; Paul
Alfons Hesse
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Process and apparatus for laying service lines without excavation
Patent number
5,096,000
Issue date
Mar 17, 1992
Schmidt; Paul
Alfons Hesse
E21 - EARTH DRILLING MINING
Information
Patent Grant
Ram boring machine
Patent number
5,095,998
Issue date
Mar 17, 1992
Schmidt; Paul
Alfons Hesse
E21 - EARTH DRILLING MINING
Information
Patent Grant
Ram boring machine
Patent number
5,074,364
Issue date
Dec 24, 1991
Schmidt; Paul
Alfons Hesse
E21 - EARTH DRILLING MINING
Information
Patent Grant
Inclination sensor
Patent number
5,042,158
Issue date
Aug 27, 1991
Schmidt; Paul
Robert Schmelzer
G01 - MEASURING TESTING
Information
Patent Grant
Ram boring machine
Patent number
5,042,599
Issue date
Aug 27, 1991
Schmidt; Paul
Paul Schmidt
Information
Patent Grant
Ram boring machine for laying service lines without excavation
Patent number
4,981,181
Issue date
Jan 1, 1991
Schmidt; Paul
Alfons Hesse
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus for making tunnels in the ground and for laying supply lines
Patent number
4,904,116
Issue date
Feb 27, 1990
Schmidt; Paul
Alfons Hesse
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Patents Applications
last 30 patents
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