Bertil R. L. Werjefelt

EA E.I. Du Pont De Nemours And: 2 patents #2,942 of 8,010Top 40%

XE Xene: 1 patents #2 of 6Top 35%

📍 Kaneohe, HI: #2 of 124 inventorsTop 2%

🗺 Hawaii: #43 of 2,560 inventorsTop 2%

Overall (All Time): #136,667 of 4,157,543Top 4%

Patents All Time

Issued Patents All Time

Showing 26–28 of 28 patents

Patent #	Title	Co-Inventors	Date
4461155	Aircraft cabin ventilation system	—	1984-07-24
4440164	Life support system and method of providing fresh air to enclosed areas	—	1984-04-03
4437318	Environmental control system and method	—	1984-03-20