US 37,305Improvement in skates1863
PD-06 · US 37,305
Improvement in skates
Plimpton's four-wheel roller skate, 1863 — the rocking-action design that made skating steerable.
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PD-06 · US 37,305 · Filed ·
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Common 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.