| 词条 | Elmer Greensfelder |
| 释义 |
}}Elmer Lewis Greensfelder (born February 7, 1892 in Baltimore, Maryland) was a playwright and inventor. In 1911 he graduated from Johns Hopkins University, and later he used his degree to serve in World War I.[1] PlaysIn 1932 Elmer Greensfelder won a contest from the Drama League of America for his play Broomsticks-Amen!.[2] Greensfelder also wrote the play Half Past Heaven.[3] Some of his other plays include The Saints Draws a Daggar, The Crocodile Chuckles, Six Stokers Who Own the Bloomin' Earth, and Mark Twain.[4] PatentsGreensfelder was an inventor with numerous approved patents, including one for "Method and Apparatus For Synchronously Producing Sounds To Accompany Motion Pictures". This patent was a system that would make sound automatically play while a motion picture was playing.[5] Other patents include "Changeable Profile Toy"[6] and "Loose Leaf Binder".[7] References1. ^Obituary of Elmer Greensfelder, Baltimore Sun, December 20, 1966 {{DEFAULTSORT:Greensfelder, Elmer}}2. ^Donald Kirkley, "Little Theaters Here Cheer By Award Of Drama League", Baltimore Sun, January 31, 1932. 3. ^Donald Kirkley, "Half Past Heaven Is Presented At Play-Arts Guild", Baltimore Sun, October 29, 1931. 4. ^Holly, David. "Elmer Greensfelder", in Baltimore in American Literature. Johns Hopkins University, 1933. 5. ^United States Patent Office, [https://www.google.com/patents?id=jG1PAAAAEBAJ Method and Apparatus For Synchronously Producing Sounds To Accompany Motion Pictures], Elmer Greensfelder, 1254684, 1918. (accessed October 25, 2009) 6. ^United States Patent Office, [https://www.google.com/patents?id=82ZhAAAAEBAJ Changeable Profile Toys], Elmer Greensfelder, 2755577, 1956. (accessed October 17, 2009) 7. ^United States Patent Office, [https://www.google.com/patents?id=KgxUAAAAEBAJ Loose Leaf Binder], Elmer Greensfelder, 1525777, 1925. (accessed October 25, 2009) 6 : Writers from Baltimore|1892 births|American inventors|Year of death missing|Date of death missing|Place of death missing |
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