Ralph G. Jefferies

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Bitton Nr. Bristol, GB

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Patents Grantslast 30 patents

Information Patent Grant
Hydrostatically driven road rollers
- Patent number 4,240,333
- Issue date Dec 23, 1980
- Stothert & Pitt Limited
- Terence R. Heathcote
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Safety control system for self-propelled road rollers
- Patent number 4,209,988
- Issue date Jul 1, 1980
- Stothert & Pitt Limited
- Colin G. Langworthy
- B60 - VEHICLES IN GENERAL