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Originally named Allen Manufacturing Company, the business produced hexagonal set screws and wrenches to fasten them. The terms "Allen wrench" (American English) and "Allen key" (British English) [ 3] are derived from the Allen brand name and refer to the generic product category "hex keys". W.G. Allen [ 4] filed the first related patent in ...
Area codes 203 and 475 are telephone area codes in the North American Numbering Plan (NANP) for the southwestern part of the U.S. state of Connecticut. The numbering plan area (NPA) is mostly coextensive with the Connecticut portion of the New York metropolitan area, and comprises most of Fairfield County, all of New Haven County, and a small ...
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
This is a list of area codes in Connecticut: [ 1] 203: Covering southwestern Connecticut ( Fairfield County (except for Sherman ); New Haven County, and the towns of Bethlehem, Woodbury, as well as a small part of Roxbury in Litchfield County ); one of the original area codes enacted in 1947. 475: Overlay of 203 (December 2009)
Area codes 860 and 959. Area codes 860 and 959 are telephone area codes in the North American Numbering Plan in the U.S. state of Connecticut. They are arranged in an overlay plan that covers most of the state, except its southwest, which uses area codes 203 and 475 . Area code 860 was created on August 28, 1995, as a numbering plan area split ...
The original North American area codes were established by the American Telephone and Telegraph Company (AT&T) in 1947, after the demonstration of regional Operator Toll Dialing during the World War II period. The program had the goal of speeding the connecting times for long-distance calling by eliminating intermediary telephone operators.
November 12, 2010. The Underwood Computing Machine Company Factory is a historic industrial complex at 56 Arbor Street in the Parkville neighborhood of Hartford, Connecticut. Developed beginning in 1917 by the Underwood Typewriter Company, it was used by that company and its successors for manufacturing, research, and development until 1969.
The term "hex key" is best known as "Allen" in the English-speaking countries like the UK, Australia, Canada and the U.S. and in Spanish-speaking countries such as Spain and Mexico (The "Allen" name is a registered trademark, originated by the Allen Manufacturing Company of Hartford, Connecticut circa 1910, [1] now owned by Apex Tool Group, LLC ...