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Patents Grantslast 30 patents

Information Patent Grant
Art medium surface treatment tool
- Patent number 10,195,894
- Issue date Feb 5, 2019
- Jacob G Bussie
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Method and apparatus for extending and retracting the writing eleme...
- Patent number 9,944,111
- Issue date Apr 17, 2018
- James Michael Elmore
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Offset pen structure for rapid assembling
- Patent number 7,665,921
- Issue date Feb 23, 2010
- Bao-Shen Liu
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Writing instrument
- Patent number 5,044,804
- Issue date Sep 3, 1991
- Pioneer Industrial Corp.
- Cheng-Hwa Chuang
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Writing implement and kit
- Patent number 4,515,492
- Issue date May 7, 1985
- Chen J. Shan
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
3112561
- Patent number 3,112,561
- Issue date Dec 3, 1963
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES