Hi Boskite!
This may not be exactly what you're looking for, but maybe we're on the right track.
This is a disc-shaped aircraft patented by one Curtis D. Kissinger, with the patent date of 7-18-75. The Patent Number is:
# 3,871,602
I found this information on a website called rexresearch.com, under the category U.S. Patents: Disc Aircraft. This website page can be reached at:
http://www.rexresearch.com/wingless/wingless.htm
I've also posted the original patent line drawing (top-view only), and I hope it gets through. I hope this at least gets you on the trail!!!
Chuck