I have a clorox bottle with the triangle Illinois Pacific logo with a date code of 1928. It also has REG on the bottom along with clorox in a big diamond. I am most sure I have an earlier clorox bottle with the triangle Illinois Pacific logo, but no date code. Neither does it have the REG on the bottom. I have learned that Illinois Pacific started with the triangle logo in 1925. Does anyone know what year the REG would have been added? Does the REG stand for a bottle design registration?
