Ball-point pen

Ball-point pen

Ball-point pen and a penpoint tip therein

Ball-point pen cap

Ball-point pen device

Ball-point pen for a low-viscosity ink

Ball-point pen having three sides and complementary cap

Ball-point pen refill

Ball-point pen tip

Ball-point pen tip

Ball-point pen tip and ink refill

Ball-point pen venting arrangement

Ball-point pen with back flow stop

Ballpoint pen

Ballpoint pen and cap therefor

Ballpoint pen containing an aqueous ink composition

Ballpoint pen having a backflow preventing mechanism

Ballpoint pen nib provided with a stem with communication...

Ballpoint pen refill and fabrication method thereof

Ballpoint pen tip