IP Library › Granted Patent US 553,802
Granted Patent S1
US 553,802 · App. 29/249,749 · Granted Oct 23, 2007

Welding mask

Assignee: Otos Tech Co., Ltd.
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Quick Facts
Patent No.
US 553,802
App. No.
29/249,749
Granted
Oct 23, 2007
Kind
S1
Claims (1)

I claim, the ornamental design for a welding mask, as shown and described.

Assignments (2)
CHANGE OF ASSIGNEE'S ADDRESS Recorded Oct 24, 2008
From: OTOS TECH CO., LTD.
To: OTOS TECH CO., LTD.
Reel/Frame 021731/0228 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 31, 2007
From: HUH, MOON YOUNG
To: OTOS TECH CO., LTD.
Reel/Frame 018832/0723 →