Yes, the first Solid Modeling system sold by what was then McAuto (McDonnell Douglas Automation Company) was named 'UniSolids' and was based on PADL-2, a solid modeling toolkit originally developed at the University of Rochester. And yes, PADL was a CSG system. The first version of UniSolids was introduced in May 1983. If you'd like to learn a bit more about this early Solid Modeling system, go to...
...and scroll down to the entry dated May, 1983.
And if you want to see some more example models created using UniSolids as well as more detailed descriptions of PADL-1 and PADL-2, go to...
...and scroll down to the item labeled
PADL-1 Model (circa 1982) where this information starts. You'll also learn a bit about the history of the company and how, even if you fail to make the sale, that you should not give up ;-)
Note that the last version of UniSolids was V3.0 and was delivered in October 1985. And while something less than 100 UniSolids licenses were ever sold. Note that back then, software was not sold on a per seat basis, but rather on a per CPU basis. And since these were basically mainframe type systems, you could run as many seats that you were able to based on the power of the CPU and the amount of memory that you had. Now UniSolids required significantly more computing power than did Unigraphics but with a large DEC VAX or Data General MV system (UniSolids only ran on 32-bit systems), you could run three or four seats of UniSolids at once. Also note that when UG/Solids was released in 1989, our customers, who had previously purchased UniSolids, was offered a free upgrade.
Anyway, enjoy.
John R. Baker, P.E. (ret)
EX-Product 'Evangelist'
Irvine, CA
Siemens PLM:
UG/NX Museum:
The secret of life is not finding someone to live with
It's finding someone you can't live without