Alec R. Carruthers

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Bratton, GB

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Patents Grantslast 30 patents

Information Patent Grant
Pipe burster
- Patent number 5,054,677
- Issue date Oct 8, 1991
- British Gas PLC
- Alec R. Carruthers
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pipe burster
- Patent number 4,928,866
- Issue date May 29, 1990
- British Gas PLC
- Alec R. Carruthers
- E21 - EARTH DRILLING MINING
Information Patent Grant
Stopping fluid flow in pipes
- Patent number 4,119,115
- Issue date Oct 10, 1978
- British Gas Corporation
- Alec Reginald Carruthers
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...