Stephen Koschal ~ Quality Autographs & Signed Books
Serving Collectors, Libraries, Institutions, Autograph Galleries and Dealers with
Autographs and Signed Books in all Fields of Collecting Since 1967.

7155 Sand Crest View, Colorado Springs, CO 80923 USA ~ Phone (561) 315-3622 ~ skoschal@aol.com

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Invented Antibiotic Tetracycline

CONOVER, Floyd H. (1923-   )  Scientist who invented the antibiotic Tetracycline. It is the first antibiotic made by chemically modifying a naturally produced drug. It soon became one of the most useful antibiotics for treatment of a number of infectious diseases. In 1950, a Pfizer team led by Conover mass produced Terramycin synthetically. Inducted into the National Inventors Hall of Fame (1992). A very scarce original sketch on a 4”x6” card of the breakdown of Tetracycline, signed in full adding “Tetracycline” by his hand............ $75.00











 


Stephen Koschal ~ Quality Autographs & Signed Books
Serving Collectors, Libraries, Institutions, Autograph Galleries and Dealers with
Autographs and Signed Books in all Fields of Collecting Since 1967.

7155 Sand Crest View, Colorado Springs, CO 80923 USA ~ Phone (561) 315-3622 ~ skoschal@aol.com