Automatic pencil with predetermined lead holding force

Details Automatic pencil with predetermined lead holding force Automatic pencil with predetermined lead holding force

B - Operations, Transporting

43

K

207/19

B43K 21/22 (2006.01) B43K 21/02 (2006.01) B43K 21/16 (2006.01) B43K 21/20 (2006.01)

Patent

CA 1034913

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