David L. Dunlap

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Gahanna, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Melt overflow system for producing filamentary and film products di...
- Patent number RE33327
- Issue date Sep 11, 1990
- Ribbon Technology Corporation
- Lloyd E. Hackman
- 164 - Metal founding
Information Patent Grant
Melt overflow system for producing filamentary and film products di...
- Patent number 4,930,565
- Issue date Jun 5, 1990
- Ribbon Technology Corporation
- Lloyd E. Hackman
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Melt overflow system for producing filamentary and film products di...
- Patent number 4,813,472
- Issue date Mar 21, 1989
- Ribbon Technology Corporation
- Lloyd E. Hackman
- B22 - CASTING POWDER METALLURGY