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Cecil Graham Richards
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Aspley, AU
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Patents Grants
last 30 patents
Information
Patent Grant
Ball valve
Patent number
4,184,507
Issue date
Jan 22, 1980
B.C. Richards & Co. Pty. Ltd.
Cecil G. Richards
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Ball valve and seal
Patent number
4,175,726
Issue date
Nov 27, 1979
B.C. Richards & Co. Pty. Ltd.
Cecil G. Richards
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Ball valve
Patent number
4,068,822
Issue date
Jan 17, 1978
B. C. Richards & Co. Pty. Ltd.
Cecil Graham Richards
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...