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
System and method for detecting deadlock in a multithread program
Electronic multiparty accounts receivable and accounts payable system
Front face of a vehicle wheel
Food-grade flour from dry fractionated corn germ and collet composition and method for producing same
Wiring structure in a semiconductor device, method of forming the wiring structure, semiconductor device including the wiring structure and method of manufacturing the semiconductor device
Integrated circuit packaging system with an integral-interposer-structure and method of manufacture thereof
Low offset, fast response voltage controlled current source and controlling method thereof
  Randomly Featured Patents
Wind-powered generator and assemblies therewith
Protective device for protecting individual battery cells in a batterypack from damages and hazards caused by reverse polarity during discharge cycles
Rear mounted spreader with horizontal auger
Throttle valve control device for an internal combustion engine
Dual use transportation system
Systems and methods for visual alerting mechanisms on a mobile communication device
Toner-remaining-amount detection sensor and toner storage container provided therewith
Glyceryl ethers as preservatives for cooling lubricants
Wallet card package with pouch
Engine operation control system