Richard J. Holker

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Marple, GB

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Patents Grantslast 30 patents

Information Patent Grant
Installation control valves
- Patent number 4,367,861
- Issue date Jan 11, 1983
- Mather & Platt Limited
- Geddes A. Bray
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...