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

A new toilet tank assembly aquarium for housing aquatic creatures.

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.

Inventor: Mark Ekern

Address: Flandreau, SD
No. of patents: 1
Last patent issue date: 01/10/2012

Number	Title	Issue Date
8091372	Heat pump defrost system A heat pump defrost system for efficiently defrosting an outdoor coil while simultaneously operating the heat pump in a normal heating manner. The heat pump defrost system generally includes a primary flow circuit including an indoor heat exchanger, an outdoor heat ...	01/10/2012