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  2. Lock Haven, Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Lock_Haven,_Pennsylvania

    Lock Haven's founder, Jeremiah Church, and his brother, Willard, chose the town site in 1833 partly because of the river, the creek, and the canal. Church named the town Lock Haven because it had a canal lock and because it was a haven for loggers, boatmen, and other travelers. Over the next quarter century, canal boats 12 feet (4 m) wide and ...

  3. Master keying - Wikipedia

    en.wikipedia.org/wiki/Master_keying

    Master keying. Master key turning a pin tumbler lock with two shear points. A master key operates a set of several locks. Usually, there is nothing different about the key. The differences are in the locks the key will operate. These master-keyed locks are configured to operate with two, or more, different keys: one specific to each lock (the ...

  4. The Master Key System - Wikipedia

    en.wikipedia.org/wiki/The_Master_Key_System

    978-1-61720-383-1. The Master Key System is a personal development book by Charles F. Haanel that was originally published as a 24-week correspondence course in 1912, and then in book form in 1916. [1] The ideas it describes and explains come mostly from New Thought philosophy. It was one of the main sources of inspiration for Rhonda Byrne 's ...

  5. Locksmithing - Wikipedia

    en.wikipedia.org/wiki/Locksmithing

    Harry Soref founded the Master Lock Company in 1921 and patented an improved padlock in 1924 with a patent lock casing constructed out of laminated steel. Linus Yale Sr. invented a pin tumbler lock in 1848. Linus Yale Jr. improved upon his father's lock in 1861, using a smaller, flat key with serrated edges that is the basis of modern pin ...

  6. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  7. Lock Haven University of Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Lock_Haven_University_of...

    www.lockhaven.edu. Lock Haven University of Pennsylvania (LHU) is a public university in Lock Haven, Pennsylvania, United States. It is part of the Pennsylvania State System of Higher Education. The main campus consists of 200 acres (81 ha) and the branch campus covers 12.9 acres (5.2 ha). [3] It offers 69 undergraduate programs and 4 graduate ...

  8. Berlin key - Wikipedia

    en.wikipedia.org/wiki/Berlin_key

    Berlin key. The Berlin key (also known as, German, Schließzwangschlüssel, or, in English, forced-locking key) is a key for a type of door lock. It was designed to force people to close and lock their doors, usually a main entrance door or gate leading into a common yard or tenement block. The key was a solution to the problem of access via ...

  9. Tubular pin tumbler lock - Wikipedia

    en.wikipedia.org/wiki/Tubular_pin_tumbler_lock

    A tubular lock and key. A tubular pin tumbler lock, also known as a circle pin tumbler lock, radial lock, or the trademark Ace lock popularized by manufacturer Chicago Lock Company since 1933, is a variety of pin tumbler lock in which a number of pins are arranged in a circular pattern, and the corresponding key is tubular or cylindrical in shape.

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