Fountain pen
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- REVERSIBLY THERMOCHROMIC COMPOSITION AND REVERSIBLY THERMOCHROMIC MICROCAPSULE PIGMENT ENCAPSULATING THE SAME
- Writing tool
Description
Claims
The ornamental design for a fountain pen, as shown and described.
Referenced Cited
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D660357 | May 22, 2012 | Lira-Nunez |
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D879877 | March 31, 2020 | Zhang |
Patent History
Patent number: D941921
Type: Grant
Filed: Mar 6, 2020
Date of Patent: Jan 25, 2022
Assignee: KABUSHIKI KAISHA PILOT CORPORATION (Tokyo)
Inventor: Akinori Ikeda (Tokyo)
Primary Examiner: Elizabeth A. Albert
Application Number: 29/726,904
Type: Grant
Filed: Mar 6, 2020
Date of Patent: Jan 25, 2022
Assignee: KABUSHIKI KAISHA PILOT CORPORATION (Tokyo)
Inventor: Akinori Ikeda (Tokyo)
Primary Examiner: Elizabeth A. Albert
Application Number: 29/726,904
Classifications
Current U.S. Class:
D19/171