Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4347367 | 3-Substituted-6-(1'-hydroxyethyl)-7-oxo-1-azabicyc lo[3.2.0]-hept-2-ene-2-carboxylic acid | Burton G. Christensen, David B. R. Johnston | 1982-08-31 |
| 4347368 | 3 -Substituted-6-substituted-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxyl ic acid | Burton G. Christensen, David B. R. Johnston | 1982-08-31 |