Title: Fishing Licenses. Alternate Title: Description: All residents of Minnesota, age 16 to 89, must have a current Minnesota fishing license unless an exemption applies. All non-residents need a license except those age 15 and younger do not need a license if a parent or guardian is licensed. Licenses are issued by the Minnesota Department of Natural Resources (DNR). Subject: Fish. Fishing. Creation Date: 9/11/2008 2:13:17 PM. Modification Date: 6/7/2010 3:36:00 PM.
Alternate Titles: Pennsylvania fireplace. Franklin stove, type of wood-burning stove, invented by Benjamin Franklin (c. 1740), that was used to warm frontier dwellings, farmhouses, and urban homes for more than 200 years. See stove.
Newcomen Atmospheric Engine. Thomas Newcomen (1663-1729), a blacksmith, experimented for 10 years to develop the first truly successful steam engine to drive a pump to remove water from mines. His ability to sell the engine was hampered by Savery's broad patent. He was forced to establish a firm with Savery, despite the improved performance of his engine, the significant mechanical differences, the elimination of the need for steam pressure, and the use of vacuum in a very different manner. A schematic of a Newcomen engine is shown in Figure 1.