Patent
   D760837
Priority
Jun 10 2015
Filed
Jun 10 2015
Issued
Jul 05 2016
Expiry
Jul 05 2031
Assg.orig
Entity
unknown
7
15
n/a
The ornamental design for teaching aid, as shown and described.

1. Teaching aid

1.1 : Back

1.2 : Front

1.3 : Perspective

Schnell, Pascal André

Patent Priority Assignee Title
11823586, May 05 2022 Apparatus for playing chords on musical instruments for visually-impaired people and method of performing same
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D930739, Nov 09 2016 Yamaha Corporation Lamp with keyboard
D952026, Jan 21 2020 Piano teaching aid
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ER4874,
ER566,
Patent Priority Assignee Title
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