Research/Patents/Inventors/BIRGER JOHANNESSEN
2 classified patents

BIRGER JOHANNESSEN

MAPLEWOOD MN US · ST. PAUL MN US

Career Trajectory

Each dot is one patent. X axis = filing year. Y axis = organization.

MINNESOTA MINING AND MANUFACTURING COMPANY
MINNESOTA MINING AND MANUFACTURING COMPANY2 patents

Summary

Total patents
2
Organizations
1
Active SOs
0
Earliest filing
1985
Latest filing
1990
Back to inventorsSource: USPTO §181 secrecy order records