-
3489790
-
Patent number 3,489,790
-
Issue date Jan 13, 1970
-
C07 - ORGANIC CHEMISTRY
-
3391202
-
Patent number 3,391,202
-
Issue date Jul 2, 1968
-
C07 - ORGANIC CHEMISTRY
-
2894989
-
Patent number 2,894,989
-
Issue date Jul 14, 1959
-
C07 - ORGANIC CHEMISTRY
-
2819320
-
Patent number 2,819,320
-
Issue date Jan 7, 1958
-
C07 - ORGANIC CHEMISTRY