Post 444539 (https://www.thevespiary.org/talk/index.php?topic=11849.msg44453900#msg44453900)
(del72: "Ok so since swid finally spelt the shit right...", Novel Discourse)Patent US4544755 (http://l2.espacenet.com/dips/viewer?PN=US4544755&CY=gb&LG=en&DB=EPD)