What surface became functional on the underside of the folded bed mechanism?
Answer
A writing desk
The design was clever in that the underside of the folded bed frame became a functional writing desk, allowing the furniture to serve a dual purpose effectively.

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Sarah E Goode - one of the first African-American US patent holders
Related Questions
What dual function did Sarah E. Goode's patented furniture serve?In what year was Sarah E. Goode officially granted the U.S. Patent for her invention?In which city did Sarah E. Goode settle and work for the remainder of her life?What significant historical distinction is Sarah E. Goode recognized for regarding U.S. patents?What surface became functional on the underside of the folded bed mechanism?What specific date is cited as the issuance marker for Sarah E. Goode's patent?What modern high-density living solution is Goode's cabinet bed compared to?What challenge was Sarah E. Goode's invention specifically designed to address in crowded urban dwellings?What aspect of securing the patent is highlighted as equally important as the mechanical design?What primary factor is cited as the source of the detailed documentation required for the patent application?What was Sarah E. Goode's approximate year of birth?