Watts, Hoffman, Fisher & Heinke, Co., L. P. A. - US Patent Attorneys and Agents

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

...In 1790, the cost to obtain a patent was between $4 and $5.

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.

Number of patents: 1
Last date: November 21, 2000

Number	Title	Issue Date
6148475	Vacuum cleaner with vibrating brushes A vacuum floor cleaning system is provided having a carpet fiber agitating brush which oscillates in a plane horizontal to the floor. The vacuum floor cleaning system of the present invention includes generally a base member supported above the floor by w...	11/21/2000