Donald D. Rice

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Marshalltown, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Valve construction
- Patent number 4,137,934
- Issue date Feb 6, 1979
- Fisher Controls Company
- Donald D. Rice
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Quick change valve trim assembly
- Patent number 4,041,973
- Issue date Aug 16, 1977
- Fisher Controls Company
- Donald D. Rice
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Quick-disconnect valve closure structure
- Patent number 3,991,903
- Issue date Nov 16, 1976
- Fisher Controls Company, Inc.
- Donald D. Rice
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...