Finding:

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   Glasses

   While the exact date and inventor may be forever disputed, it is almost certain that spectacles were invented between 1280 and 1300 in Italy. ... "The Inventions and Scientific Achievements of Benjamin Franklin".
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   1784

   Benjamin Franklin invents bifocal spectacles.
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   List of United States inventions

   Benjamin Franklin is usually credited with the creation of the first pair of bifocals in the early 1760s, though the first indication of his double spectacles comes from a political cartoon printed in 1764. ... Joseph Gayetty invented toilet paper in 1857.
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   History of medicine

   c. 1280, spectacles, in Italy ... 1775, bifocal lenses, by Benjamin Franklin
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   Jean-Jacques Rousseau

   Letter to M. D'Alembert on Spectacles, 1758 (Lettre à d'Alembert sur les spectacles) ... Benjamin Franklin · David Rittenhouse · John Adams · Thomas Jefferson · James Madison · Thomas Paine
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   Edmund Burke

   Smelling out a Rat;—or—The Atheistical-Revolutionist disturbed in his Midnight "Calculations" (1790) by Gillray, depicting a caricature of Burke with a long nose and spectacles, holding a crown and a cross. ... Benjamin Franklin · David Rittenhouse · John Adams · Thomas Jefferson · James Madison · Thomas Paine
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   Bifocals

   The mounting of two half lenses into a single frame led to a number of early complications and rendered such spectacles quite fragile. ... Benjamin Franklin
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   Thou Art the Man

   "Poe's Chapters on Natural Magic" as collected in Poe and His Times: The Artist and His Milieu, edited by Benjamin Franklin Fisher IV. ... ... (1843) • The Black Cat (1843) • Diddling (1843) • The Spectacles (1844) • A Tale of the Ragged Mountains (1844) • The...
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   David Rittenhouse

   One example is the American Philological Society, he began as a librarian, became secretary, and after Benjamin Franklin's death, he became Vice President. ... George Washington chose him not so much for his previous experience as Treasurer of Pennsylvania, but rather because of a pair of spectacles that Rittenhouse made for Washington.
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    Medical equipment

    C. 1280, spectacles ... 1775, bifocal lenses, by Benjamin Franklin

Explore the following pages on Powerset:

• Glasses,
• 1784,
• List of United States inventions,
• History of medicine,
• Jean-Jacques Rousseau,
• Edmund Burke,
• Bifocals,
• Thou Art the Man,
• David Rittenhouse,
• Medical equipment