Click on the link below for a much clearer image of the Baker patent for the Fecker mounts.

Wayne

If you go by patent dates starting in 1925. Fecker had filed a patent for their own rings similar to most common rings see today. I don't believe Lyman was in the scope business until 1929 with the purchase of Stevens scopes & later Winchester. Lyman filed the patent for it's mount in 1932. Unertl filed a patent for it's mount in 1940.

MrTipUp wrote on Dec 1^st, 2022 at 9:59pm:

I stand corrected. Steven first bought Winchester then Stevens.

It has been my experience to see more Fecker mounts on other make scopes, rather than the opposite. Most likely that many consider them a superior mount. The possible exception being Unertl, as they were available longer than Fecker as replacements. Still, not what I have observed, but never kept count. This too may change, as very good mounts are now available from Steve Earle, DZ, MVA, and possibly others as noted.

The only Unertl scopes without a rib that I am aware of were specifically ordered that way to be used on a unlimited benchrest rifle using mounts that held the scope solidly but with windage and elevation adjustment available using a Jewell pivoting front ring similar to the current Burris ring. I don't recall the fellows name that designed the rear ring, but Lee Six was the fellow who had them manufactured. The fact that Unertl would make a scope without a rib for a client and sell scopes without rings would lead me to assume others would do likewise. despite that, I doubt many did so. I understand that when Unertl left Fecker to build his own scopes, he used Fecker mounts until he would manufacture those of his own design, which would explain seeing a number of Unertl scopes with Fecker rings. The patent dates would indicate that as well.