Electronic blackboard
United States Patent D797848

Tsuruoka, Naoto (Ohta-ku, JP)
Application Number:
Publication Date:
Filing Date:
Primary Class:
International Classes:
(IPC1-7): 1906
Field of Search:
D19/113, D19/114, D20/10, D20/19, D20/39, D20/40, D20/41, D20/42, D14/371, D14/373, D14/374
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US Patent References:
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Primary Examiner:
Albert, Elizabeth
Attorney, Agent or Firm:
Oblon, McClelland, Maier & Neustadt, L.L.P.

1. The ornamental design for an electronic blackboard, as shown and described.


FIG. 1 is a front elevational view of an electronic blackboard according to my design;

FIG. 2 is a back elevational view thereof;

FIG. 3 is a left side elevational view thereof,

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top elevational view thereof;

FIG. 6 is a bottom elevational view thereof;

FIG. 7 is a front, bottom perspective view thereof; and,

FIG. 8 is a back, top perspective view thereof.

The broken lines in the figures represent unclaimed subject matter and form no part of the claimed design.