Frederick Herridge

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Buckinghamshire, GB

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Patents Grantslast 30 patents

Information Patent Grant
Cutting tools
- Patent number 4,880,247
- Issue date Nov 14, 1989
- Anderson Strathclyde PLC
- Frederick J. Herridge
- E21 - EARTH DRILLING MINING
Information Patent Grant
Socketed boss having means for retaining a tool shank
- Patent number 4,274,678
- Issue date Jun 23, 1981
- Austin Hoy and Company Limited
- Frederick Herridge
- E21 - EARTH DRILLING MINING