Hans
My dad said he repaired those hinges about 30 years ago, and just a few years or so later they failed again and by then parts were unavailable. Or so he says.
That oven and cooktop are the best I've ever used. I'm saddened that the house will be sold soon and they will probably be ripped out and tossed in a dumpster for some modern junk. I would love to rescue them but I'd need something to put in their place and I also don't have a place to put them and probably never would.