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Class Information
Number: 181/178
Name: Acoustics > Sound-modifying means > Intensifying horn > Collapsible
Description: Subject matter wherein the horn includes means to effect a reduction in size from an operative condition to an inoperative condition, e.g., telescopes or folds.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7530425 |
Speaker enclosure for a ceiling or wall mounted speaker method and apparatus |
May. 12, 2009 |
| 6889797 |
Multi-purpose headgear |
May. 10, 2005 |
| 6724904 |
Microphone mounting assembly |
Apr. 20, 2004 |
| 6625288 |
Collapsing paraboloid dish and method |
Sep. 23, 2003 |
| 6568504 |
Multi purpose headgear |
May. 27, 2003 |
| 6480613 |
Loudspeaker stand |
Nov. 12, 2002 |
| 5967405 |
Megaphone cup |
Oct. 19, 1999 |
| 5967875 |
Megaphone cup |
Oct. 19, 1999 |
| 5397866 |
Dual acoustic horn assembly |
Mar. 14, 1995 |
| 5094317 |
Two-piece megaphone with ornamental member |
Mar. 10, 1992 |
| 4703829 |
Collapsible and portable megaphone |
Nov. 3, 1987 |
| 4613012 |
Article of rolled form |
Sep. 23, 1986 |
| 4058995 |
Lock de-icer |
Nov. 22, 1977 |
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