with radial cutting blades

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Patents Grantslast 30 patents

Information Patent Grant
Pencil sharpener assembly
- Patent number 11,034,185
- Issue date Jun 15, 2021
- SUNWOOD HOLDING GROUP CO., LTD.
- Xiasen Lin
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Electric pencil sharpener with auto-stop feature
- Patent number 9,352,608
- Issue date May 31, 2016
- Chia-Wen Hsu
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Crayons with associated carrying case
- Patent number 6,887,006
- Issue date May 3, 2005
- Timothy E. Carpenter
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Pencil sharpener
- Patent number 4,918,816
- Issue date Apr 24, 1990
- Anthony J. Alpha
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
2309272
- Patent number 2,309,272
- Issue date Jan 26, 1943
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
1842306
- Patent number 1,842,306
- Issue date Jan 19, 1932
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
1477192
- Patent number 1,477,192
- Issue date Dec 11, 1923
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
1333740
- Patent number 1,333,740
- Issue date Mar 16, 1920
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES