Who makes the Glenfield 4x15 scope?

The Glenfield 4x15 scope was manufactured by the Marlin Firearms Company, which is known for its production of firearms and firearm accessories. The Glenfield brand was used for a line of products aimed at budget-conscious consumers. While Marlin is primarily recognized for its rifles, the Glenfield scopes were part of their broader offerings in the mid-20th century.