Our Nikola Tesla crewsocks are cozy and stylish and feature a monochromatic portrait of Tesla in vibrant royal blue, contrasting beautifully against a cream-colored base. Crafted from a soft cotton blend, they are perfect for keeping your feet comfortable during long hours of work or during leisurely strolls. The National Archives logo is prominently displayed on the foot of each sock, adding a touch of class and sophistication to your footwear.

Highlighting Tesla's brilliant mind and significant contributions to the fields of electricity, magnetism, and wireless communication, these socks remind us of documents in the holdings of the National Archives, such as the variety of patents documenting his inventions. These socks are a must-have for any fan of Nikola Tesla or anyone who appreciates both fashion and intellectual history.

Filed with the United States Patent and Trademark Office November 30, 1887 Nikola Tesla's 1887 electro magnetic motor patent feature the notes, "Be it known that I, NIKOLA TESLA, a subject of the Emperor of Austria . . . now residing at New York, in the county and State of New York, have invented certain new and useful Improvements in Electro Magnetic Motors, of which the following is a specification, reference being to the drawings accompanying and forming a part of the same. . . . I accomplish this by constructing a motor with two or more independent energizing-circuits, on the field magnets . . . so that alternating currents are caused to traverse the motor circuits. By so doing the poles of the field-magnet of the motor are progressively shifted, and by their attraction upon a rotary armature set up a rotation in the latter in the direction of the movement of the poles."--Nikola Tesla. Filed with the United States Patent and Trademark Office November 30, 1887.

The patent act of 1790 established the rules for submitting a patent application. Each application had to be submitted with specifications, a patent drawing, and if possible a model of the invention. Eventually, models were no longer required.

The National Archives holds nearly three million patent case files from 1836-1956.