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2. Electric fence - Wikipedia

   en.wikipedia.org/wiki/Electric_fence

   An electric fence is a barrier that uses electric shocks to ... An early application involved goats and ... Permanent electric fencing is used in many agricultural ...

3. Nofence - Wikipedia

   en.wikipedia.org/wiki/Nofence

   Nofence is a Norwegian company that makes GPS collars for farm animals (cattle, sheep, and goats) that discourage them from crossing virtual fences. [1] [2] Oscar Hovde Berntsen has been working on the idea of virtual fencing, as an alternative to fixed electric fencing, since the 1990s. [3] Nofence was incorporated in 2011. [3]

4. Agricultural fencing - Wikipedia

   en.wikipedia.org/wiki/Agricultural_fencing

   Vinyl-coated wire fence is usually based on high-tensile wire with a vinyl coating. Some forms are non-electric, others embed layers of graphite to carry a current from the wire to the outside of the coated product so that it can be electrified. It can be of any color, with white particularly common in the United States so that the fencing is ...

5. Bill Gallagher (inventor) - Wikipedia

   en.wikipedia.org/wiki/Bill_Gallagher_(inventor)

   His business also carried out tractor conversions and made farming equipment, including his battery-powered electric fence. With his brothers, Henry and Vivian, he invented a spinning top-dresser. By the 1950s, his business interests expanded into commercial fishing, operating a trawling venture from Raglan although this was not profitable.

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   homepage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

7. Pet fence - Wikipedia

   en.wikipedia.org/wiki/Pet_fence

   A pet fence or radio fence, is an electronic system designed to keep a pet or other domestic animal within a set of predefined boundaries without the use of a physical barrier. A mild electric shock is delivered by an electronic collar if its warning sound is ignored. The system was first invented and patented by Richard Peck in 1973. [1]