Is anyone familiar with Infinity Slope brand speakers?

I have a pair of speakers that I inherited from my father when he passed away. From what I can tell, the brand is 'Infinity Slope'. He would have originally purchased them in the late 80's to early 90's. I did a quick blue book look-up on them and came up with 0 hits.

Some rough specs:

1. They are about 5 feet tall - floor standing on casters
2. They appear to have 2 tweeters, 1 mid-ranger driver, and 2 woofers

If anyone has some insight, I'm all ears. Thanks in advance.