| |
 |
|
Class Information
Number: 181/153
Name: Acoustics > Diaphragm and enclosure > Rounded enclosure (e.g., curved, etc.)
Description: Subject matter wherein the means to enclose the diaphragm has at least one surface that is circular or curved.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4164988 |
Fine tuned, column speaker system |
Aug. 21, 1979 |
| 4139075 |
Loudspeaker device |
Feb. 13, 1979 |
| 4123621 |
Acoustical speaker device |
Oct. 31, 1978 |
| 4090582 |
Speaker protector |
May. 23, 1978 |
| 4085289 |
Loudspeaker system |
Apr. 18, 1978 |
| 4082159 |
Ceramic speaker enclosure |
Apr. 4, 1978 |
| 4057689 |
High fidelity sound reproduction system and modules thereof |
Nov. 8, 1977 |
| 4052564 |
Masking sound generator |
Oct. 4, 1977 |
| 4006308 |
Loudspeaker arrangement |
Feb. 1, 1977 |
| 3993162 |
Acoustic speaker system |
Nov. 23, 1976 |
| 3978941 |
Speaker enclosure |
Sep. 7, 1976 |
| 3976838 |
High fidelity sound reproduction system |
Aug. 24, 1976 |
| 3945461 |
Sound speaker system |
Mar. 23, 1976 |
| 3944020 |
Speaker headrest for motor vehicles |
Mar. 16, 1976 |
| 3933219 |
Speaker system |
Jan. 20, 1976 |
| 3931867 |
Wide range speaker system |
Jan. 13, 1976 |
|
|
|
