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Speyer, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Monitoring device for motor-driven underwater grab bucket dredge gear
Patent number
6,134,815
Issue date
Oct 24, 2000
Rohr GmbH
Wolfgang Rohr
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Floating grab installation for the recovery of sand and gravel
Patent number
5,259,130
Issue date
Nov 9, 1993
Rohr GmbH
Wolfgang Rohr
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Cutoff device for crane systems
Patent number
4,804,095
Issue date
Feb 14, 1989
Rohr GmbH
Wolfgang Rohr
B66 - HOISTING LIFTING HAULING