Resources Contact Us Home
Browse by Category: Main > Business
Class Information
Number: 434/313
Name: Education and demonstration > Audio recording and visual means > Common carrier for visual means and audio recording > Card, sheet, or block > Reading head moved past stationary audio track > Manually
Description: Subject matter wherein the reproducing head is moved by hand.

Patents under this class:

Patent Number Title Of Patent Date Issued
4337375 Manually controllable data reading apparatus for speech synthesizers Jun. 29, 1982
4273538 Educational aid Jun. 16, 1981
4219703 Sound reproduction device for talking books Aug. 26, 1980
4044393 Hand guided tape player Aug. 23, 1977
3970803 Printed sound track system Jul. 20, 1976

  Recently Added Patents
Caprazene as a novel compound and derivatives thereof, and caprazol as a novel compound and derivatives thereof
Retransmission control method, base station and mobile station
Tie down strap hook
Circuit breakers
Method for assisting in the checking of transaction records, transaction device, server, mobile terminal, and corresponding computer programs
Handheld electronic device with text disambiguation employing advanced editing feature
Apparatus and method for scrolling a screen of a portable terminal having a touch screen
  Randomly Featured Patents
Cable connector having interchangeable color bands
Fuel cell power supply system
Circuitry for reducing the skew between two signals
Sleeve bearing for railway traction motor
Container bottom
Cylindrical track for toy
Manually powered vehicle having improved steering
Method of inserting terminals into housing with special arrangement
Contacting apparatus
Ladder-type cable tray system