John Ward

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Crofton, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Paint brush bristles
- Patent number 4,409,372
- Issue date Oct 11, 1983
- Ametek, Inc.
- John Ward
- A46 - BRUSHWARE
Information Patent Grant
Formation of hollow tapered brush bristles
- Patent number 4,376,746
- Issue date Mar 15, 1983
- Ametek, Inc.
- John Ward
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Hollow tapered brush bristles
- Patent number 4,307,478
- Issue date Dec 29, 1981
- Ametek Inc.
- John Ward
- A46 - BRUSHWARE