John D. Knox

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Louisville, KY, US

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Patents Grantslast 30 patents

Information Patent Grant
Boron-treated hard metal
- Patent number 5,116,416
- Issue date May 26, 1992
- Vermont American Corporation
- Jack D. Knox
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Drill bit blade for masonry and rock drill
- Patent number 4,984,944
- Issue date Jan 15, 1991
- Vermont American Corporation
- Donald C. Pennington
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Drill having means for locating cutting bit in a bit holder
- Patent number 4,633,959
- Issue date Jan 6, 1987
- Vermont American Corporation
- John D. Knox
- E21 - EARTH DRILLING MINING