They set up Kempthorne Prosser , which became a limited liability company in 1879 .
Thomas Whitelock Kempthorne and Evan Prosser entered into business together in 1870 as chemists .
chemists set up Kempthorne Prosser , which became a limited liability company in 1879 .
Thomas Whitelock Kempthorne and Evan Prosser entered into business together in 1870 as chemists .