F23D 2900/31009
Blue flame burners with flame spreader or burner hood with a bead
Official title: Blue flame burners with flame spreader or burner hood with a bead at the wick carrying tube
F23D2900/31009 (Blue flame burners with flame spreader or burner hood with a bead) appears on 0 US grants and 0 published applications in this corpus.
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