Hello all, so I have a question about a glass Coca cola bottle I found bit I'm running into a condurum
The bottle says PAT D-105529 and the day code says 15 L 48, according to what I know about date codes on coke bottles this should be a bottle from around 1915 but my research points out that Pat d bottles were not made in 1915, but I could be wrong about that, that's why I am asking. The L I'm assuming is a glass manufacturer mark. But I'm not 100% sure.
can anyone help me with the date? Am I correct in my thought this is a PAT D bottle from 1915?
Picture are the bottle I am talking about. It's kind of hard to see the raised glass in the picture but the best I can take.




Any help is appreciated!