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Mason wasn’t the only manufacturer to add this patent date to his jars, hence its vast proliferation.
John Mason invented and patented the process for cutting a thread onto the lip of glass jars, as well as a corresponding thread inside zinc lids, which could then be screwed tightly onto the jars.
Clear and sweet is my soul, and clear and sweet is all that is not my soul.
Lack one lacks both, and the unseen is proved by the seen, Till that becomes unseen and receives proof in its turn.