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-66 · US 2,495,429

Method of treating foodstuffs

Original patent print · 1950

Percy Spencer's microwave cooking patent — discovered when a radar magnetron melted the chocolate in his pocket.

200 g/m² matte paper · Unframed

29 € · Shipping included · Choose size ↓

Method of treating foodstuffs patent drawing, 1950, archive paper finish

US 2,495,429Method of treating foodstuffs1950

Inventor: Percy L. Spencer
Patented: January 24, 1950

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PD-66 · US 2,495,429 · Filed October 8, 1945 ·

Pairs well with

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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?: 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

Method of treating foodstuffs

Pairs well with

Improvement in sewing-machines

Dress-Pin

Combination of lead-pencil and eraser

Common questions