By what year were glass bottles capable of being laid flat for storage being produced?

The production of glass bottles that could be laid flat for storage is attributed to advancements in glass manufacturing techniques during the mid-18th century. By the year 1755, the technology to produce these kinds of bottles became more widespread. This innovation was significant because it allowed for more efficient storage and transportation of liquids, compared to earlier designs that were typically round and difficult to nest. The ability to lay bottles flat helped optimize space both in warehouses and during shipping, marking a notable development in the beverage industry and influencing the design of containers moving forward.

As for the other years, while glass bottles were being produced prior to 1755, the specific advancement that allowed them to be laid flat had not yet been established until around that time, making the year 1755 a pivotal moment in the evolution of glass bottle design.