[mark m]

The first patented WFP was in 1895

[telfordwindowclnr]

I believe the first commercially available window cleaning systems were made by Tucker Pole Systems in the USA.  I had one of their systems secondhand 11 years ago. 

The pure water technology was being used a long time before hand and one use of it was during operations in hospital theatres.  Tap water is not a viable option due to the pollutants and chemicals which caused infections. 

In time, pure water of this nature was discovered to have an amazing ability to absorb dirt and began to be used in various industries, including cleaning.  Eventually, it was thought that it could be used to clean high-rise windows in America and water fed poles were born.

Long before that though, wall paintings of ancient Spanish and German civilisations have been discovered in caves that show them cleaning solar panels.  Sadly I was not the very first Deegee.