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Leo Block was born in 1870. In 1887 at the age of seventeen he started clerking at his father Dr. M. Blocks & Co. whole sale drug business. He would attend the Univirsity of Michigan College of Pharmacy in 1889. After College he went back to his fathers drug business. The drug store was located at 308 High Street in Chattanooga, Tennesee. He would file for a trade mark for his product he called Cherigin which was for treating cronic diseases on may 6, 1905. It was granted on July 25, 1905. Below is one of these bottles. Leo Block would pass away on December 18, 1922 at the age of 52.

cherigin 1

cherigin 2

Here is a little about his father Dr. M. Block.

Dr. M. Block was a native of France. He would immigrate to the United States in 1857. By 1859 he would move to Chicago to teach French. While teaching he would also attend coures at the Chicago Medicial College which he graduated in 1863. After college he entered the army as a assistant surgeon. After the war he relocated to Chattanooga, Tennesee were he engaged in a medicial practice.

He would give up the medicial practice and start a wholesale drug business with his brother-in-law Prosper Lazard in 1868. The firm was called the M. Block & Co.


Goodspeed's "History of East Tennesee" 1887.

Offical Gazette of U. S. Patents.

Frank & Frank Jr. (Wicker) Bottle Collection.

cherigin 1a

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