Assignee
SPERIAN WELDING PROT AG
CH·0 granted patents·3 pending applications·0 citations·filing 2007–2010
Top patents by PatentIndex Score
3 records- 0144US2008068521A1Electro-optical glare protection filter and glare protection unit for a portable glare protection deviceSPERIAN WELDING PROT AG·Filed 2007·Application pending·0 cites
- 0239US2009051834A1Optical protective filter and method for its manufactureSPERIAN WELDING PROT AG·Filed 2008·Application pending·0 cites
- 0311US2011023205A1Welding protection maskSPERIAN WELDING PROT AG·Filed 2010·Application pending·0 cites
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