Questions tagged [preliminary]

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Is my Grandfathers patent 243095 expired? Can heirs still claim it? Who was Commisioner of patents 1947?

It was application 725139. Lawyers were Clarence O'brien and Harvey Jacobson.
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Is it worth it to apply for a preliminary examination in a PCT process?

How does a preliminary examination report help in the PCT and patenting process? What are the consequences and advantages of international preliminary examination? Is it worth it in terms of time and ...
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