Resources Contact Us Home
Browse by Category: Main > Business
Class Information
Number: 434/232
Name: Education and demonstration > Occupation > Keyboard operation (e.g., typing, key punching, etc.) > Practice keyboard having individually depressible keys > With means to display character upon depression of key
Description: Subject matter including means which will cause a character to be displayed when the key bearing the corresponding character is depressed.

Patents under this class:

Patent Number Title Of Patent Date Issued
5803744 Computer typing learning device Sep. 8, 1998
5484288 Apparatus for teaching inscription of characters Jan. 16, 1996
5478082 Apparatus for teaching or correcting the stance of a golfer Dec. 26, 1995
4693694 Toy with moving screen Sep. 15, 1987
4573928 Teaching toy Mar. 4, 1986
4492582 Teaching and entertainment device Jan. 8, 1985
4195423 Pop-up cash register Apr. 1, 1980

  Recently Added Patents
Reception circuit and signal reception method
Stacked type semiconductor memory device and chip selection circuit
Automated processing machine used for processing samples placed on slides and having an output device
CMOS image sensor
Method and system for advertisement using internet browser to insert advertisements
Flame-protected impact-modified polycarbonate compositions
Optical interconnect in high-speed memory systems
  Randomly Featured Patents
Antihypertensive polypeptides
Selective vaporization process and apparatus
Localized utility power system for aircraft
Liquid dispenser for a sink
Recording medium, and method and apparatus of controlling access to the recording medium
Separable fat scale
Cationic coupling agents, their use for oxidation dyeing of keratinous fibers, dyeing compositions and dyeing methods
Frame structure which provides an interface between parts of a compound document
Inhibitors of syk and JAK protein kinases
Write data compensating circuit in magnetic recorder