| |
 |
|
Class Information
Number: 434/308
Name: Education and demonstration > Audio recording and visual means
Description: Subject matter wherein instruction is presented both audibly from a sound recording and visually.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4208809 |
Audio-time plotting equipment and method |
Jun. 24, 1980 |
| 4190967 |
Keyboard attachment system and method for keyboard training |
Mar. 4, 1980 |
| 4189779 |
Parameter interpolator for speech synthesis circuit |
Feb. 19, 1980 |
| 4178698 |
Teaching system |
Dec. 18, 1979 |
| 4121355 |
Learning device |
Oct. 24, 1978 |
| 4079431 |
Indicia display and audio storage cassette |
Mar. 14, 1978 |
| 4055907 |
Character scanned teaching machine |
Nov. 1, 1977 |
| 4035929 |
Teaching machine |
Jul. 19, 1977 |
| 4006541 |
Tactile learning device |
Feb. 8, 1977 |
| 3981087 |
Teaching machine |
Sep. 21, 1976 |
| 3971141 |
Method for interactive communications |
Jul. 27, 1976 |
| 3964179 |
Telephone system teaching apparatus |
Jun. 22, 1976 |
| 3949488 |
Educational associativity doll |
Apr. 13, 1976 |
| 3942268 |
Methods and apparatus for interactive communications |
Mar. 9, 1976 |
| 3934226 |
Automated audio health history acquisition system |
Jan. 20, 1976 |
|
|
|
