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Most patents from 40 years ago will be expired now. But there are three points which might still forbid the usage of the process: Newer patents on improvements - there could still be patents for parts of the method patented later. If every part of it was known exactly like it is now 40 years ago, this is unlikly, if not, it's entirely possible. 40 years ago ...


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I think Google Patents has the application title correct: Medical device, method of making and using the same. However, that does sound more like the title of a patent class, not a patent application. This was the title from the original specification document (March 12, 2014): However, a revised specification (April 4, 2014) provided a new title: "Ostomy ...


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