The Xerox company was started in 1906 but at the time was called the "Haloid Photographic company.  Its current name wasn't in use until 1961.  The company manufactures printers and photocopiers.  As you can see by the examples I have given the logo has undergone a lot of changes through the years, which doesn't really help with logo recognition.  Despite this, the company seems to be doing just fine.  I do like the new logo much more that the previous logos because it is much more interesting to look at with the incorporation of a symbol. The placement of the symbol is also pretty good.

Info from -  http://famouslogos.net/xerox-logo/