Ronald J. Calvert

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Edwardstown, AU

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Patents Grantslast 30 patents

Information Patent Grant
Clothes hoist elevating means
- Patent number 4,236,419
- Issue date Dec 2, 1980
- Hills Industries Limited
- Ronald J. Calvert
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Angle meshing gear
- Patent number 4,167,127
- Issue date Sep 11, 1979
- Hills Industries Limited
- Ronald J. Calvert
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...