-
-
-
-
-
-
-
-
-
-
-
-
3547896
-
Patent number 3,547,896
-
Issue date Dec 15, 1970
-
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
-
3440273
-
Patent number 3,440,273
-
Issue date Apr 22, 1969
-
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...