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-50 · US 1,781,541

Refrigeration

Original patent print · 1930

Einstein and Szilard's refrigerator with no moving parts — two physicists moonlighting as appliance engineers, 1930.

200 g/m² matte paper · Unframed

29 € · Shipping included · Choose size ↓

Refrigeration patent drawing, 1930, archive paper finish

US 1,781,541Refrigeration1930

Inventor: Albert Einstein & Leó Szilárd
Patented: November 11, 1930

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Total29 €

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Shipping to Spain, Portugal, France, Germany, Italy, Netherlands, Belgium, Austria and Ireland. Delivery time includes transit after dispatch.

PD-50 · US 1,781,541 · Filed December 16, 1927 ·

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

Refrigeration

Pairs well with

Incandescent Electric Lamp

Electro-magnetic motor

Apparatus for transmitting electrical energy

Common questions