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  2. Anderson-Prichard Oil Corporation - Wikipedia

    en.wikipedia.org/wiki/Anderson-Prichard_Oil...

    In June 1922, Anderson and Prichard formed the "APCO Refining Company" (Apco), the Cyril refinery asset. The refinery was operated in the name of the Apco Refining Company until February 26, 1923, when all of the company's stock was sold to the latest business entity of the partners, the Anderson-Prichard Oil Corporation, which had also been ...

  3. APCO Oil Corporation - Wikipedia

    en.wikipedia.org/wiki/APCO_Oil_Corporation

    APCO” was a common acronym used within the Anderson-Prichard Oil Corporation since its founding in 1922. As early as 1926, Anderson-Prichard began attempts at trademarking the acronym, first through overtures to the American Pacific Company, and later through communications with the American Oil Company, whose trading name AMOCO was thought to be too similar.

  4. List of valves - Wikipedia

    en.wikipedia.org/wiki/List_of_valves

    Choke valve, Butterfly valve used to limit air intake in internal combustion engine. (Not to be confused with choke valves used in industrial flow control, above.) Clapper valve: a type of check valve used in the Siamese fire appliance to allow only one hose to be connected instead of two (the clapper valve blocks the other side from leaking out)

  5. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes. Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics. Many industrial, military or otherwise professional tubes were also produced.

  6. Ten-code - Wikipedia

    en.wikipedia.org/wiki/Ten-code

    The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code. [ 1 ] The codes, developed during 1937–1940 and expanded in 1974 by the Association of Public-Safety Communications Officials-International (APCO), allow brevity and standardization of message traffic.

  7. Association of Public-Safety Communications Officials ...

    en.wikipedia.org/wiki/Association_of_Public...

    Association of Public-Safety Communications Officials (APCO) International was founded in 1935.. APCO serves government functions that provide public safety communications services in areas of law enforcement, forestry, conservation, fire, highway maintenance, emergency rescue and medical services, emergency management, and other activities supported or endorsed by federal, state, local and ...

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