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 3,387,396Display devices1968

PD-88 · US 3,387,396

Name: Display devices Patent Print (1968)
Brand: PATENT DEPT.
SKU: PD-88
Availability: InStock

The lava lamp mechanism, 1968 — heated wax, tinted water and patience, patented as a 'display device'.

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Total29 €

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PD-88 · US 3,387,396 · Filed March 4, 1965 ·

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.