
US 2,390,636Writing instrument1945
PD-63 · US 2,390,636
Writing instrument
László Bíró's ballpoint pen, 1945 — quick-drying ink on a rolling ball, the pen that replaced the fountain.
- Inventor
- Patented
FinishSize
Total29 €
PD-63 · US 2,390,636 · Filed June 17, 1943 ·
Pairs well with
Full collectionCommon questions
- Is this a real patent?
- Yes — the original drawing as filed at the U.S. Patent Office, cleaned and printed. Public domain by law.
- How is it shipped?
- Printed in Europe on 200 g/m² matte paper. Small sizes ship flat, 50 × 70 ships rolled in a tube. Tracking by email.
- What if it arrives damaged?
- Send a photo within 7 days and we reprint and reship it free.


