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Patent Dept.

PD-67 · US 2,524,035

Three-electrode circuit element utilizing semiconductive materials

Original patent print · 1950

Bardeen and Brattain's point-contact transistor from Bell Labs, 1950 — the device that shrank the world.

200 g/m² matte paper · Unframed

29 € · Shipping included · Choose size ↓
Inventor
John Bardeen & Walter Brattain
Patented
October 3, 1950

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Total29 €
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PD-67 · US 2,524,035 · Filed June 17, 1948 ·

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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.

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