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Many Australian found marble bottles contain variations or modifications from Mr. Codd's original design, such as extra grooves, dimples, notches, bulges, recesses, valves, and the list goes on. Some of these bottles were patented others were registered designs with some not in either category the inventor for what ever reason choosing not to lodge any protection.
A patent is the instrument that is used to protect an invention. It is issued by a Patent Office to prevent inventions being copied and reproduced. The State or commonwealth allows inventors to secure protection for their inventions provided that the inventor discloses the details of the invention to the Patent Office
Registered designs are monopoly rights that are granted on the outward appearance of an object. They protect the way an object looks - as opposed to patents that protect inventions, or the way in which an object is made or the manner in which it works.
the fact is only some of these bottles were officially patented, but most being registered designs not patents, others were just idea's or so called improvements.