Waldo Semon, Date of Birth, Place of Birth, Date of Death

Waldo Semon

American inventor

Date of Birth: 10-Sep-1898

Place of Birth: Demopolis, Alabama, United States

Date of Death: 26-May-1999

Profession: engineer, inventor, chemist

Nationality: United States

Zodiac Sign: Virgo

Waldo Lonsbury Semon (September 10, 1898 – May 26, 1999) was an American inventor born in Demopolis, Alabama.
He is credited with inventing methods for making polyvinyl chloride useful.