IP Library › Granted Patent US 4,374,027
Granted Patent Utility
US 4,374,027 · App. 06/014,853

Process for the secondary treatment of wastewater

Inventors: David E. Severeid, Daryl D. Jech
Patented Case View Patent ↗
Granted: Feb 15, 1983 Filed: Feb 26, 1979
Inventors
David E. Severeid
Daryl D. Jech
Assignee (at issue)
International Telephone and Telegraph Corporation

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Quick Facts
Patent No.
US 4,374,027
App. No.
06/014,853
Filed
1979-02-26
Granted
1983-02-15
Kind
A