I am the Granddaughter of Wladimir Senutovitch who created the patent. What is the status at this time?

Asked Apr 21 '15 at 03:29

Active Apr 21 '15 at 03:29

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In reference to the patent: US1996490

asked Apr 21 '15 at 03:29

Andrea Senutovitch

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Duplicate of How do you determine a patent's expiration date? – Pushpak Apr 21 '15 at 04:32

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