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
Apparatus and method for providing vehicle data for testing product
Aperture stop
Light-emitting element, light-emitting device, and electronic device
PCSK9 antagonists
Adaptive non-positive inductor current detector (ANPICD)
Reliable and accurate usage detection of a software application
SONOS stack with split nitride memory layer
  Randomly Featured Patents
Modular mortise and tenon base
Energy monitoring system for a plurality of local stations with snapshot polling from a central station
Discontinuous and nonsequential polymeric gel systems for separation of macromolecules
Bend switch for wired headset
Door panel
Digital device configuration and method
Thermal decomposition of aluminum chloride hexahydrate
Liquid crystals
Electrochemical test strip with an integrated micro-needle and associated methods
Capturing video content