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

...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!

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 235/61K - Partial product wherein result is obtained in (one) summation

Subclass of Class 235 - Registers
No. of patents: 0