Help Identifying Makers Mark

Evening all. I wandered in here from the Garage Sale Finds forum in hopes of getting some assistance identifying the maker of some plates I picked up last week. I've done a lot of searching online for glass makers who used a triangle logo, but no luck as of yet. I'll attach a couple of photos of the logo. I will try to get a picture of the actual plates posted tomorrow in case the pattern helps identification in any way. Thank you in advance.
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