Karlheinz Fritz

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Sprockhovel, DE

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Patents Grantslast 30 patents

Information Patent Grant
Protective device for a fluid-operated percussion tool
- Patent number 5,873,579
- Issue date Feb 23, 1999
- Krupp Bautechnik GmbH
- Heinz-Jurgen Prokop
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Fluid-operated striker assembly with automatic stroke length variation
- Patent number 5,860,481
- Issue date Jan 19, 1999
- Krupp Bautechnik GmbH
- Heinz-Jurgen Prokop
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Hydraulic striking device
- Patent number 4,646,854
- Issue date Mar 3, 1987
- Fried. KRUPP Gesellschaft mit beschrankter Haftung
- Friedrich-Karl Arndt
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS