4. B - Operations, Transporting
  5. 43
  6. K

Useful writing instrument

B - Operations – Transporting – 43 – K

Patent

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Details

207/7

B43K 21/00 (2006.01)

Patent

CA 953588

Hung Ya-Mei

B - Operations – Transporting – 43 – K
Inventor

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Liu Yen-Ping H.

B - Operations – Transporting – 43 – K
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Hung Ya-Mei

B - Operations – Transporting – 43 – K
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Liu Yen-Ping H.

B - Operations – Transporting – 43 – K
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Na

G - Physics – 21 – G
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