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

"The idea that cavalry will be replaced by these iron coaches is absurd. It is little short of treasonous."

Aide-de-camp to Field Marshal Haig ; At a tank demonstration, 1916

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 172/405 - One wheel translates another swings

Subclass of Class 172 - Earth working
Definition: Apparatus in which one of said interconnected wheels has
No. of patents: 0