Neither case would be considered patent infringement as the original inventions were too old to be protected by patents even had the British filed for patent protection in the US.
Moreover, Lowell made substantial improvements which would have been considered a new invention anyway - which is the whole point of the patent system.
Neither case would be considered patent infringement as the original inventions were too old to be protected by patents even had the British filed for patent protection in the US.
Moreover, Lowell made substantial improvements which would have been considered a new invention anyway - which is the whole point of the patent system.