Niels Christensen

Niels Anton Christensen
Personal details
Born(1865-08-16)16 August 1865
Denmark
Died5 October 1952(1952-10-05) (aged 87)
ProfessionEngineer and Inventor

Niels Anton Christensen (16 August 1865 – 5 October 1952) was a Danish-American inventor whose principal invention was the O-ring, the ubiquitous hydraulic seal.

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