Is this a real patent?

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

An unframed print on 200 g/m² matte paper, printed in Europe. Dispatched in 2–4 working days, followed by transit. Shipping is included to Spain, Portugal, France, Germany, Italy, Netherlands, Belgium, Austria and Ireland. Tracking by email.

What if it arrives damaged?

Send a photo within 7 days and we reprint and reship it free.

PD-60 · US 2,292,387

Secret communication system

Original patent print · 1942

Hedy Lamarr's frequency-hopping patent, 1942 — the Hollywood star whose invention underpins Bluetooth and Wi-Fi.

200 g/m² matte paper · Unframed

29 € · Shipping included · Choose size ↓

Secret communication system patent drawing, 1942, archive paper finish

US 2,292,387Secret communication system1942

Inventor: Hedy Kiesler Markey (Hedy Lamarr)
Patented: August 11, 1942

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PD-60 · US 2,292,387 · Filed June 10, 1941 ·

Pairs well with

Full collection

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?: An unframed print on 200 g/m² matte paper, printed in Europe. Dispatched in 2–4 working days, followed by transit. Shipping is included to Spain, Portugal, France, Germany, Italy, Netherlands, Belgium, Austria and Ireland. Tracking by email.
What if it arrives damaged?: Send a photo within 7 days and we reprint and reship it free.

Read the full FAQ

Secret communication system

Pairs well with

Electro-Magnetic Telegraph

Improvement in Telegraphy

transmitting electrical signals

Common questions