B43K 19/08
The writing-core being made from wear-resistant substances
Official title: the writing-core being made from wear-resistant substances
B43K19/08 (The writing-core being made from wear-resistant substances) appears on 1 US grants and 1 published applications in this corpus.
Search patents in B43K- Granted patents
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- Published applications
- 1
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- 4
- Inventors
- 5
- Latest grant
- 11 Feb 2025
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