Patent
   D310530
Priority
Sep 21 1988
Filed
Sep 21 1988
Issued
Sep 11 1990
Expiry
Sep 11 2004
Assg.orig
Entity
unknown
10
17
n/a
The ornamental design for a non-electronic sound amplifier, as shown and described.

FIG. 1 is a perspective view of a non-electronic sound amplifier showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof; and

FIG. 7 is a left side elevational view thereof.

McGuire, Rex

Patent Priority Assignee Title
8220585, Nov 08 2010 Non-electronic hearing aid
8781146, Dec 11 2012 Handstands Promo, LLC Combined passive acoustic speaker and stand
D322070, Oct 02 1989 Acoustic reflector headset
D397118, Apr 15 1997 Combined external directional sound dome reflector and deflector for motor vehicle speaker enclosure
D667813, Jun 16 2011 Sound amplifying apparatus with adjustable headband for enhancing the hearing of a user
D674492, Nov 08 2010 Non-electronic hearing aid
D686213, Dec 11 2012 Handstands Promo, LLC Passive speaker amplifier
D849248, Nov 26 2017 Hearing aid
D909343, Feb 07 2019 B A N ENTERPRISES Speaker sound diverter
D930840, Oct 17 2019 Hearing enhancement device
Patent Priority Assignee Title
12951,
1366193,
1708257,
1828151,
2537201,
30688,
3618698,
4551584, Apr 15 1983 Bang & Olufsen A/S Earphone set
4574912, Nov 14 1984 Ear muff hearing aid
4771859, May 14 1987 Hearing aid apparatus
656182,
D244467, Sep 11 1975 Soundmasters, Inc. Sound intensifying receiver
D278431, Aug 27 1982 Acoustic reflector headset
D286873, Feb 29 1984 Sony Corporation Non-electronic sound amplifier headset or the like
D292916, Aug 24 1984 Sony Corporation Non-electronic sound amplifier
ER6554,
JP192083,
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