Electronic blackboard
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Description
The broken lines in the figures represent unclaimed subject matter and form no part of the claimed design.
Claims
The ornamental design for an electronic blackboard, as shown and described.
Referenced Cited
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Patent History
Patent number: D797848
Type: Grant
Filed: Feb 29, 2016
Date of Patent: Sep 19, 2017
Assignee: RICOH COMPANY, LTD. (Tokyo)
Inventor: Naoto Tsuruoka (Ohta-ku)
Primary Examiner: Elizabeth Albert
Application Number: 29/556,267
Type: Grant
Filed: Feb 29, 2016
Date of Patent: Sep 19, 2017
Assignee: RICOH COMPANY, LTD. (Tokyo)
Inventor: Naoto Tsuruoka (Ohta-ku)
Primary Examiner: Elizabeth Albert
Application Number: 29/556,267
Classifications
Current U.S. Class:
D19/113