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 586,193transmitting electrical signals1897

PD-27 · US 586,193

Name: transmitting electrical signals Patent Print (1897)
Brand: PATENT DEPT.
SKU: PD-27
Availability: InStock

Marconi's wireless telegraphy — the 1897 U.S. patent behind the first radio signals across open water.

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Total29 €

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PD-27 · US 586,193 · Filed ·

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.