U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

"We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology."

Carl Sagan

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

Class 238/312 - Protective boxes and closures

Subclass of Class 238 - Railways: surface track
Definition: Boxes and closures for protection of rail-joints and other
No. of patents: 0