Familiar with the PuttingDisc? (the website is a little rough) I saw the figures below in a patent that issued this week and thought that I had seen it before, but there is hardly a reference to it on the web (so I must have been mistaken). Oh well, further proof that it is not easy to get a golf training aid to market.
The patent is USPN 7347789 titled “golf putting practice device” and describes the invention as:
Pretty cool little invention.
David Dawsey – Watching Golf Putting Patents