The Minute Hygiene was not a bidet. It is described here:
Essentially it was a plumbed in enema and douche appliance A bidet is a fixture that the user sits upon (or hovers over). The Minute Hygiene was clearly designed to be used on the toilet.
In fact, one was used on me in the 195s. As a child stayed for a few days with a friend of my mom's in her NYC apartment and she was concerned I had not pooed in the strange place. Near bedtime, I was called into the bathroom and mom's friend was sitting on the toilet seat. I was told told me to drop my PJ pants and lie over her knees. Very soon I felt warmth flowing into me and a strong urge to poo soon followed As I was pooing, I saw the little stainless box under her sink, but I didn't open it.
Many decades later, I saw and bought one It is very simple. Just two needle valves, one hot one cold, and a “T” to mix the water flow. The hose reeled up. There were four nozzles, douche, adult and infant enema, and a mini spray rose.
The device had a couple of problems: It needed to be plumbed in to the hot and cold water… quite easy now in the days of flexible water hoses, but not back then. Also, the water temperature was not controlled. This could be a problem in a large building where surge pressure imbalances can happen.
The Minute Hygiene was sold in the Hammacher Schlemmer catalog, but I think it was a market failure. Can you imagine a 19650s housewife calling the plumber to install an enema and douche appliance in her bathroom. They were also expensive. About $100 to $200, as I remember. In those days, a new car was $1000.