Is this a real patent?

Yes — the original drawing as filed at the U.S. Patent Office, cleaned and printed. Public domain by law.

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.

US 381,968Electro-magnetic motor1888

PD-18 · US 381,968

Name: Electro-magnetic motor Patent Print (1888)
Brand: PATENT DEPT.
SKU: PD-18
Availability: InStock

Tesla's electro-magnetic motor, 1888 — the rotating magnetic field, foundation of the AC world we live in.

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PD-18 · US 381,968 · Filed October 12, 1887 ·

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.