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-35 · US 808,897

Apparatus for treating air

Original patent print · 1906

Willis Carrier's air conditioner, 1906 — invented to keep printing paper flat, it ended up moving the Sun Belt.

200 g/m² matte paper · Unframed

29 € · Shipping included · Choose size ↓

Apparatus for treating air patent drawing, 1906, archive paper finish

US 808,897Apparatus for treating air1906

Inventor: Willis H. Carrier
Patented: January 2, 1906

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PD-35 · US 808,897 · Filed September 16, 1904 ·

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

Apparatus for treating air

Pairs well with

Improvement in sewing-machines

Dress-Pin

Combination of lead-pencil and eraser

Common questions