Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Household
Class Information
Number: 30/452
Name: Cutlery > Static pencil sharpener > Plural, sequentially engaged cutters
Description: Device including a plurality of successively employed cutters adapted to perform a plurality of shaping operations on a workpiece.










Patents under this class:

Patent Number Title Of Patent Date Issued
8016004 More silent and robust electric pencil sharpener Sep. 13, 2011
7654179 Crayon sharpener Feb. 2, 2010
7363714 Pencil sharpener Apr. 29, 2008
6948251 Pivoting sharpening device for pencil with non-circular cross section Sep. 27, 2005
6883697 Office tool assembly Apr. 26, 2005
6725549 Sliding sharpening device for pencil with non-circular cross section Apr. 27, 2004
6571480 Pencil sharpener for carpenter's pencil Jun. 3, 2003
6338198 Pencil sharpener Jan. 15, 2002
6065514 Compact handheld battery-operated cosmetic pencil sharpener May. 23, 2000
5894669 Sharpener for soft core pencils Apr. 20, 1999
5875555 Crayon sharpener assembly Mar. 2, 1999
5802948 Method for sharpening crayons Sep. 8, 1998
5699620 Apparatus for sharpening crayon marking instruments to form an improved arcuate safety marking tip Dec. 23, 1997
5167071 Cosmetic pencil sharpener Dec. 1, 1992
4918816 Pencil sharpener Apr. 24, 1990
4759129 Pencil sharpener Jul. 26, 1988
4744150 Container for tape ruler with manual pencil sharpener May. 17, 1988











 
 
  Recently Added Patents
Unified feedback frame for supporting a plurality of feedback modes and a multiple-input multiple-output (MIMO) communication system using the unified feedback frame
Nucleotide sequence coding for variable regions of .beta. chains of human T lymphocyte receptors, corresponding peptide segments and the diagnostic and therapeutic uses
Pointer display device, pointer display/detection method, pointer display/detection program and information apparatus
Polyamide compositions
Method of creating exercise routes for a user and related personal navigation device
Battery structures and related methods
System and method for deriving cell global identity information
  Randomly Featured Patents
Optical disk drive
Alkene dimerization
Reversible rotary actuator with spring return
Method and apparatus for frying thin potato slices to chips
Preventive method for plate deformation due to welding in flat plate welded structure
Container for flammable liquid
Ignition apparatus for internal combustion engine
Increasing ethylene and/or propylene production in an oxygenate to olefins reaction systems
Document aligning apparatus
Jump rope exercise system