<div dir="ltr"><div dir="ltr"><span style="background-color:transparent">Michael E Caloroso wrote:</span></div><div class="gmail_quote gmail_quote_container"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr">US 3,930,429</div></div></blockquote><div><br></div><div>Don did a write-up of it here: <a href="https://till.com/articles/arp/patents.html#US03930429">https://till.com/articles/arp/patents.html#US03930429</a></div><div>Very weird architecture indeed!</div><div><br></div><div>Neil</div></div></div>