Related to ownership of Patent and its requirements.

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How to Find current Ownership of a patent?

In reference to the patent: USD259587 Ways to figure out the current legal ownership status of patent?
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1answer
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My grandfathers patent, expired?

In reference to the patent: US 948,162 A I'm wondering if this patent has expired, and the process to claim it? This is my great-grandfathers invention.
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Patent purchase

I would like to own this patent but have no idea how to go about redeeming this patent. Who will I need to contact in order to purchase the patent. It appears to be inactive. Charlie