When I send a draft patent application to an inventor who is new to the patent process, the inventor often asks why the claims seem to repeat themselves. A patent application often has one group of ...

SEVERAL circulars recently received from the Bureau of Standards of the Department of Corn- merce, Washington, well illustrate the untiring in- dustry to be found in the American public offices.

Founded in 1780, the American Academy of Arts and Sciences is an international learned society whose members are the world's leading scientists, scholars, artists, business people, and public leaders.

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...