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

The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.

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 238/155 - Twin

Subclass of Class 238 - Railways: surface track
Definition: Insulated rail-joints of the twin-chair type, the two parts
No. of patents: 0