Historical Marker
The Thomas Cannery
Historical marker location:
3 East Diamond Avenue, Gaithersburg, Maryland
( Marker is on East Diamond Avenue, 0.4 miles west of North Frederick Avenue (Maryland Route 355), on the right when traveling east.)
Gaithersburg, Maryland.
Maryland was home to the first African American woman to hold a patent: In 1885, Sarah E. Goode, an African American woman from Baltimore, became the first African American woman to hold a U.S. patent. Her invention was a folding cabinet bed, which was designed to save space in small apartments.