Sight glass of welding mask
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Description
The broken lines in the drawing views are included for the purpose of illustrating the unclaimed portions of the sight glass of welding mask and form no part of the claimed design.
Claims
The ornamental design for a sight glass of welding mask, as shown and described.
Referenced Cited
Patent History
Patent number: D781508
Type: Grant
Filed: Mar 4, 2016
Date of Patent: Mar 14, 2017
Assignee: OTOS WING CO., LTD. (Seoul)
Inventor: Moon Young Huh (Seoul)
Primary Examiner: Randall Gholson
Application Number: 29/556,952
Type: Grant
Filed: Mar 4, 2016
Date of Patent: Mar 14, 2017
Assignee: OTOS WING CO., LTD. (Seoul)
Inventor: Moon Young Huh (Seoul)
Primary Examiner: Randall Gholson
Application Number: 29/556,952
Classifications
Current U.S. Class:
Element Or Attachment (D29/122)