Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,112 pages of information and 233,645 images on early companies, their products and the people who designed and built them.
Henry Daniel Ruhmkorff (1801-1877)
1851 Invented the Ruhmkorff Coil.
1855 Received a decoration and medal for his invention.
1858 Received first prize at the French Exhibition of Electrical Apparatus.
Died in 1877 December 20th. 
1878 Obituary