Vacuum tube speaker
Latest ECHOWELL ELECTRONIC CO., LTD. Patents:
Description
The broken lines shown in the drawings depict portions of the vacuum tube speaker that form no part of the claimed design. The lines shown inside the small circles in
Claims
The ornamental design for a vacuum tube speaker, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
Other references
2497747 | February 1950 | Valdettaro |
2617956 | November 1952 | Hamvas |
D220544 | April 1971 | Unger |
D371787 | July 16, 1996 | Sohn |
D392640 | March 24, 1998 | Tully |
D525613 | July 25, 2006 | Masui |
D574362 | August 5, 2008 | Zhong |
D598004 | August 11, 2009 | Lam |
D629383 | December 21, 2010 | Quilter |
D717269 | November 11, 2014 | Kim |
D813189 | March 20, 2018 | Lundgard |
D830328 | October 9, 2018 | Nugent |
20190318898 | October 17, 2019 | Chen |
2019009738 | January 2019 | JP |
- Taiwan Echowell audio landed in Japan in the fall, announced Jun. 29, 2019 [online], retrieved Nov. 1, 2019, retrieved from internet, https://www.phileweb.com/news/d-av/201906/29/47802.html.
Patent History
Patent number: D893460
Type: Grant
Filed: Apr 11, 2018
Date of Patent: Aug 18, 2020
Assignee: ECHOWELL ELECTRONIC CO., LTD. (New Taipei)
Inventor: Hsi-Hsien Chen (Taichung)
Primary Examiner: Barbara Fox
Assistant Examiner: Messina L Smith
Application Number: 29/643,724
Type: Grant
Filed: Apr 11, 2018
Date of Patent: Aug 18, 2020
Assignee: ECHOWELL ELECTRONIC CO., LTD. (New Taipei)
Inventor: Hsi-Hsien Chen (Taichung)
Primary Examiner: Barbara Fox
Assistant Examiner: Messina L Smith
Application Number: 29/643,724
Classifications
Current U.S. Class:
Speaker (12) (D14/221)