Jacques-Victor Delforge & Henri-Otto Mayer filed a patent for this type of plunger-based device in 1852

Please find below the Jacques-Victor Delforge & Henri-Otto Mayer filed a patent for this type of plunger-based device in 1852 answer and solution. This question aired on July 20 2023 episode of Jeopardy! TV Game Show. For older Jeopardy Questions and Answers we recommend you to visit our archive page.

Jacques-Victor Delforge & Henri-Otto Mayer filed a patent for this type of plunger-based device in 1852

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