I haven't seen one in ages and didn't know they've been brought back. Bad memories after my divorce back in the 70's. I bought a Sears model. That was my stove, griddle, & toaster. I cooked my breakfast on it and also made my supper on it like a two sided griddle. For some reason, lots of folks called them "hamburger cloppers" I don't know if that was a trade name of one of major brands that was generically applied or if it was a regional thing. Sure was a lot of different brands on the market. I remember seeing almost an entire isle side of them in some of the chains with features such as double, reversable/removable griddles, meat forming wells to make perfectly round burgers, & temperature controls. Unless you had one that the griddles were removable, they were a pain to clean as they were not submersible. They also made huge messes with a grease puddle pouring out at they cooked as most had no containment outside of the main cooking well.
The Contact Grills that replaced them got part of it right, but most didn't have a flat griddle option and were still pain to clean. That's another device there were so many varieties of that's starting to wane, but you can still find a few like Geore Foreman's. You don't see that many of them anymore and the Panini grills seem to be taking their place and a few tabletop griddles that seem to come and go over the years are still around and never seem to quite disappear.
Table Top Wok
There's something that was designed for failure. Max you can get out of a household 1110V receptical is 15-20A with the top end of most any appliance limited to around 1800W. No way you can really do any real wok cooking at that wattage even in small amounts. For a while there were a lot of electic woks on the shelves. Haven't seen one for a while except by mail order either.
My grandparents had a Presto Quick Burger single hamburger press cooker that I used the heck out of when I was a kid. Apparently they still make them.