Herbert E. Leistner

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Toronto, CA

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Patents Grantslast 30 patents

Information Patent Grant
T-nut with indented leading and trailing edge flanges
- Patent number 6,305,888
- Issue date Oct 23, 2001
- Sigma Tool & Machine
- Herbert E. Leistner
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Sealed end tee-nut
- Patent number 6,183,181
- Issue date Feb 6, 2001
- Sigma Tool & Machine
- Herbert E. Leistner
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Tee-nut with globular shaped sleeve
- Patent number 6,129,493
- Issue date Oct 10, 2000
- Sigma Tool & Machine
- Herbert E. Leistner
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Tee nut fastener member
- Patent number 4,508,478
- Issue date Apr 2, 1985
- Sigma Tool & Machine Limited
- Herbert E. Leistner
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...