David Diperstein

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Glenside, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for repairing a cracked metal part using repair plugs coated...
- Patent number 5,341,554
- Issue date Aug 30, 1994
- David Diperstein
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Self-tapping, self-aligning thread repair insert
- Patent number 4,730,968
- Issue date Mar 15, 1988
- Diperstein; David
- David Diperstein
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method of repairing cracked thin metal parts
- Patent number 4,599,781
- Issue date Jul 15, 1986
- David Diperstein
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method and apparatus for repairing cracked metal parts
- Patent number 4,247,973
- Issue date Feb 3, 1981
- Seal Lock International, Inc.
- David Diperstein
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR