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Barbed wire - Wikipedia ... Barbed wire
The border fences were constructed in a number of phases, starting with the initial fortification of the border from May 1952. The first-generation were crudely built barbed-wire fences (Stacheldrahtzäune) standing between 1.2 and 2.5 metres (3.9 and 8.2 ft) high. The fence was overlooked by watchtowers located at strategic intervals along the ...
Wire obstacle. In the military science of fortification, wire obstacles are defensive obstacles made from barbed wire, barbed tape or concertina wire. They are designed to disrupt, delay and generally slow down an attacking enemy. During the time that the attackers are slowed by the wire obstacle (or possibly deliberately channelled into ...
Dragon's teeth (fortification)
The Joseph F. Glidden House is located in the United States in the DeKalb County, Illinois city of DeKalb. It was the home to the famed inventor of barbed wire Joseph Glidden. The barn, still located on the property near several commercial buildings, is said to be where Glidden perfected his improved version of barbed wire which would ...
Concertina wire - Wikipedia ... Concertina wire
A party line (multiparty line, shared service line, party wire) is a local loop telephone circuit that is shared by multiple telephone service subscribers. [1] [2] [3]Party line systems were widely used to provide telephone service, starting with the first commercial switchboards in 1878. [4]
Joseph Farwell Glidden (January 18, 1813 – October 9, 1906) was an American businessman and farmer. He was the inventor of the modern barbed wire. In 1898, he donated land for the Northern Illinois State Normal School in DeKalb, Illinois, which was renamed as Northern Illinois University in 1957.