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Patent
   D242877
Priority
Jan 27 1975
Filed
Jan 27 1975
Issued
Dec 28 1976
Expiry
Dec 28 1990
Inventors
Bologna, J…
Assg.orig
Assg.curr
Entity
unknown
Referenced by
9
References
3
Maint.:
n/a
The ornamental design for a keyboard guide, as shown and described.

FIG. 1 -- is an elevational view of one side of a keyboard guide showing my new design;

FIG. 2 -- is an elevational view of another side;

FIG. 3 -- is an elevational view of the third side;

FIG. 4 -- is a left end elevational view the right end being a mirror image thereof.
INVENTORS:

Bologna, Joseph D.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
11423802, Oct 10 2019 hand2mind, Inc. Educational clock
11823586, May 05 2022 Apparatus for playing chords on musical instruments for visually-impaired people and method of performing same
6644975, Oct 19 2001 Keyboard guide
D476367, Oct 19 2001 Keyboard training device
D760837, Jun 10 2015 Teaching aid
D888151, Nov 09 2017 Piano key overlay tile
D972630, Nov 27 2020 Piano keyboard overlay
D973768, Oct 10 2019 hand2mind, Inc. Educational number line
D975178, Oct 10 2019 hand2mind, Inc. Educational number line
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
257790,
3350973,
529928,
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