Byron,

In a previous thread you credited these fine fly tyers with that same 'invention'. I responded to your statement with the following:
"That FOTW entered into the conversation because I was pointing out that fly tyers are inventive people and that other fly tyers had developed a tool for use in tying extended bodies. I previously referenced similar tools illustrated and photographed in early fly tying books. At any rate, the tool connected my posts to the topic of the Lempke flies." I even posted photos from Fly Tyer magazine about their flies and tool.
I know many tyers who've 'invented' various tools because of necessity and later learned that others have 'invented' similar tools or techniques. It happens frequently. Just ask one of this sites' moderators about his extension tool.
Anyway,
Magazine cover:


Top of cover


The Cordes/Lempke 'Tool'


Tool & Recipies