Douglas J. Mackenzie

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Redwater, Alberta, CA

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Patents Grantslast 30 patents

Information Patent Grant
Grab hook for attachment to a chain to provide partial link adjustm...
- Patent number 5,173,998
- Issue date Dec 29, 1992
- Douglas J. Mackenzie
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...