Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 144/28.72
Name: Woodworking > Special-work machine > Pencil sharpening > Movable tool > Rotatable or revolvable > Including orbital or electric motor drive
Description: Machine including means for rotating the tool, which means either (a) includes a pair of rotatable elements having peripheral surfaces in continuous engagement with, and movable relative to, one another for transfer of motive force between said elements or (b) is powered by electrical energy.










Patents under this class:

Patent Number Title Of Patent Date Issued
8505596 Cutter assembly for an electric pencil sharpener Aug. 13, 2013
8353323 Sharpener with autostop feature Jan. 15, 2013
8225827 Sharpener with noise reducing features Jul. 24, 2012
8205648 Electronic pencil sharpener Jun. 26, 2012
8205649 Cutter assembly and electric pencil sharpener Jun. 26, 2012
8196624 Pencil sharpener Jun. 12, 2012
7913731 Pencil sharpener Mar. 29, 2011
7726365 Electric pencil sharpener Jun. 1, 2010
7699082 Electric multi-pencil sharpener Apr. 20, 2010
7669619 Electric pencil sharpener Mar. 2, 2010
7581573 Electric pencil sharpener Sep. 1, 2009
7546858 Pencil sharpener Jun. 16, 2009
7472728 Electrically powered rapid sharpening cosmetic pencil sharpener Jan. 6, 2009
7455087 Electric sharpener for writing instruments Nov. 25, 2008
7360566 Structure of automatic pencil sharpener Apr. 22, 2008
7273079 Electric pencil sharpener Sep. 25, 2007
7240703 Automatic pencil sharpener Jul. 10, 2007
7134461 Pencil sharpener Nov. 14, 2006
6886614 Pencil sharpener May. 3, 2005
6845795 Portable handheld sharpener with loop attachment Jan. 25, 2005
6688197 Notch sawing apparatus for dove-tail joints Feb. 10, 2004
6637481 Apparatus for sharpening a writing instrument Oct. 28, 2003
6470929 Pencil sharpener Oct. 29, 2002
6457498 Cosmetic eye and lip pencil sharpener Oct. 1, 2002
5052453 Structure of pencil sharpener Oct. 1, 1991
4966208 Pencil sharpener Oct. 30, 1990
4601316 Electric pencil sharpener Jul. 22, 1986











 
 
  Recently Added Patents
System and method for dynamic quality-of-service-based billing in a peer-to-peer network
Current collector for lead acid battery
Secure device sharing
Image processing unit, image processing method and program
Tap initialization of equalizer based on estimated channel impulse response
High surface area composition for use in the catalytic hydroconversion of a heavy hydrocarbon feedstock, a method making such composition and its use
Metal-doped oxide, method of preparing the same, and solid oxide electrolyte using the metal-doped oxide
  Randomly Featured Patents
Therapeutic muff
Flowable pesticides
Active physiotherapeutic device
Work surface particularly designed for computers or computer terminals
Compact dust collector
Explosive attenuating structure for use inside missiles and the like
Method and apparatus for generating and displaying location-specific diagnostic information using an implantable cardiac stimulation device and an external programmer
Vinyl ether terminated oligomers and polymers
Zoom lens system
Cosmetic and dermatological light protection formulations in the form of O/W macroemulsions or O/W microemulsions containing shea butter