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
Selection of hash lookup keys for efficient retrieval
Single-chain variable fragment (scFv) able to recognize and bind CD99 human protein
MIM capacitor and associated production method
Implantable device
Pyridylphenyl compounds for inflammation and immune-related uses
Stowable pet leash and collar
Water bottle warning triangle
  Randomly Featured Patents
Surface configuration of a rear door for a vehicle
Cam phasing control system for improving regeneration efficiency
High resolution input detection
Epitaxial semiconductor deposition methods and structures
Light transmissive trim plate for recessed lighting fixture
Process for forming foundry components
Optimum solution search method and optimum solution search apparatus as well as storage medium in which optimum solution search program is stored
Vacuum cleaning tool
Seat belt retractor with a belt extension controlled force limiting
Process for dehalogenation of aryl and alpha-araliphatic halides