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
Water bottle warning triangle
Methods and systems for determining the reliability of transaction
Battery loading and unloading mechanism
Probiotic enriched and low organic acid food products
Dynamic learning method and adaptive normal behavior profile (NBP) architecture for providing fast protection of enterprise applications
System and method for determining a characterisitic of an object adjacent to a route
Precision geolocation of moving or fixed transmitters using multiple observers
  Randomly Featured Patents
Semiconductor memory device
Pierce gun and method of controlling thereof
Electrically heated nozzle for die casting
Personal watercraft
Field effect transistor output circuit operable by a reduced amount of current
Medical knot pusher
UWB transmitting and receiving device for removing an unnecessary carrier component in a transmission signal spectrum
Microscope objective, microscope, and method for imaging a specimen
Resorbable polymer compositions for use in medicine, dentistry, and surgery
Device for safety guiding of hauling chain especially at ranging drum shearer in coal mining