I had a nice long conversation with the lady at Magma Engineering last week. They had expressed their interest in the Lubesizer long before Star closed their doors. They finally bought the rights, molds, and machines to make the lubesizer in the early 90's, she thought around 1993. That matches up with other reports I've heard about when Star ceased opporations.
As for when they started, it was in the early 30's. They applied for their patent in 1933, and it was granted in 1934. I have seen Stars on eBay that had a brass plaque that said Star Mfg, Patent Pending. American Rifleman did a review of a "Progressive" in May 1934. According to the review, Star was already making the Universal.
How many did they make?? I don't think we will ever know that one, but I'd like to hear if anyone has and ideas.