Daniel W. Wollensak

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Elmhurst, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Writing instrument with barrel and ferrule assembly
- Patent number 4,341,481
- Issue date Jul 27, 1982
- Sanford Research Company
- Daniel W. Wollensak
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Housing assembly for fluid marking device
- Patent number 4,341,482
- Issue date Jul 27, 1982
- Sanford Research Company
- Daniel W. Wollensak
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES