Interesting although not 100% correct.
All is good until WMS SARATOGA which was released in OCT 1948.. according to IPDB this was the first machine to have thumper bumpers (now known as just bumpers).
Flippers at the bottom of the playfield had already been done in Feb of the same year by Genco on TRIPLE ACTION.. some 6 or 7 months prior to WMS taking on the flipper placing.
What i do find very interesting is WMS being responsible for the drop target as we know it today, Gottlieb had similar on MINSTREL MAN ( try getting one of these!!) some 10 years or so prior... WMS are not known for drops... Gottlieb are.
Fancy making an innovative design aspect and then give it away!
