D21H 5/0097
With means restoring or reinforcing the paper-structure
Official title: {with means restoring or reinforcing the paper-structure (preserving paintings B44D7/00; multi-ply material with incorporated laminae of threads or fabric D21H1/08)}
D21H5/0097 (With means restoring or reinforcing the paper-structure) appears on 0 US grants and 0 published applications in this corpus.
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