Charles G. Roberts

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Richmond, GB

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Patents Grantslast 30 patents

Information Patent Grant
Float valve
- Patent number 4,640,307
- Issue date Feb 3, 1987
- Roberts & Associates Water and Waste Treatment Limited
- Charles G. Roberts
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Float valve mechanism
- Patent number 4,628,956
- Issue date Dec 16, 1986
- Vecone Development Corporation
- Charles G. Roberts
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...