The broken lines shown in the drawings represent portions of the welding helmet feature contour that form no part of the claimed design.
The broken lines shown in the drawings represent portions of the welding helmet feature contour that form no part of the claimed design.
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Entry |
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Juhlin, et al., 3M Speedglas 9100 iF Inernational Forum Design GmbH, © 2009, Verlag, ISBN: 978-3-7643-8981-9. |
3M Korea, 3M Speedglas, “Comfortable Protection for Safer Welding,” Date unknown, however believed to be prior the filing of this application. Literature was cited in foreign counterpart Korean Application No. 30-2010-39963 in an Office Action dated Nov. 30, 2011. |
Number | Date | Country | |
---|---|---|---|
Parent | 29368909 | Aug 2010 | US |
Child | 29428100 | US |