David L. Burk

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Slab surface contour monitor
- Patent number 5,162,873
- Issue date Nov 10, 1992
- Allegheny Ludlum Corporation
- David L. Burk
- G01 - MEASURING TESTING
Information Patent Grant
Insulating heat retention system and method
- Patent number 5,101,652
- Issue date Apr 7, 1992
- Allegheny Ludlum Corporation
- David L. Burk
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Slab surface contour monitor
- Patent number 5,083,867
- Issue date Jan 28, 1992
- Allegheny Ludlum Corporation
- David L. Burk
- G01 - MEASURING TESTING
Information Patent Grant
Hands-off micrometer
- Patent number 4,993,170
- Issue date Feb 19, 1991
- Allegheny Ludlum Corporation
- David L. Burk
- G01 - MEASURING TESTING
Information Patent Grant
Random inventory system
- Patent number 4,796,209
- Issue date Jan 3, 1989
- Allegheny Ludlum Corporation
- David L. Burk
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Plate hold-down device for abrasive cutting of metal plates
- Patent number 4,086,731
- Issue date May 2, 1978
- Allegheny Ludlum Industries, Inc.
- David L. Burk
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR