Seriously, if you don't learn to use the search engine pretty soon, you're going to be sunk around here :( See: Post 192250 (https://www.thevespiary.org/talk/index.php?topic=9216.msg19225000#msg19225000)
(lugh: "Tablet patents", Methods Discourse) for a list of these early tablet press patents ;D
(https://www.thevespiary.org/rhodium/Rhodium/hive/hiveboard/picproxie_docs/000400838-file_1lgy.gif)