David J. Prawdzik

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Andover, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Bristles employing particulates and brushes including same
- Patent number 6,174,600
- Issue date Jan 16, 2001
- Speciality Filaments, Inc.
- James M. Brown
- A46 - BRUSHWARE
Information Patent Grant
Hollow filament with crimp for use in spiral binding
- Patent number 5,968,638
- Issue date Oct 19, 1999
- Specialty Filaments, Inc.
- James M. Brown
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER