David Grenell

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Laurelton, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Weather-resistant arrangement for outdoor electrical devices
- Patent number 4,342,493
- Issue date Aug 3, 1982
- Allen-Stevens Corp.
- David Grenell
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
End fittings for flexible metallic conduits
- Patent number 4,288,110
- Issue date Sep 8, 1981
- Allen-Stevens Corp.
- David Grenell
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...