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 808,897Apparatus for treating air1906

PD-35 · US 808,897

Name: Apparatus for treating air Patent Print (1906)
Brand: PATENT DEPT.
SKU: PD-35
Availability: InStock

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

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Total29 €

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

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.