Interesting story, thanks!
As for drip, Melitta Bentz patented the use of a paper filter in a drip brewer in 1908 ("On a whim, she uses nails to poke holes in the bottom of a brass cup, which she then lines using a sheet of blotting paper from her son's school notebook." http://www.melitta-group.com/en/Biograp ... 7,650.html
Adding electricity to the drip coffeemaker was (perhaps) first patented in 1954 as the Wigomat - another company still in existence, though not the household name in North America that Melitta is (http://wigomat.de/index.html
... but, according to Wikipedia, the first automatic drip coffee maker was made by the Bunn-o-matic company in 1963 https://en.wikipedia.org/wiki/Bunn-o-Matic_Corporation
. George Bunn came up with the fluted flat-bottomed coffee filter in the 1950's http://www.bunn.com/why-bunn/innovation
Bunn's patents are cited in the Bresaolo patent cited above, e.g., https://www.google.com.ar/patents/US3034417
However, like many such items, there were a succession of patents and who was "first" depends on how you define the item.
All that to say that making drip coffee machines seems to be a good business to be in - unlike espresso machine manufacturers, which seem to have almost incomprehensible histories of mergers, buyouts, and bankruptcies