Jeffrey L. Armstrong

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Oakland, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Ergonomically efficient tool
- Patent number 6,155,620
- Issue date Dec 5, 2000
- Jeffrey L. Armstrong
- A46 - BRUSHWARE
Information Patent Grant
Ergonomically efficient tool
- Patent number 5,810,408
- Issue date Sep 22, 1998
- Jeffrey L. Armstrong
- A46 - BRUSHWARE