-
3240617
-
Patent number 3,240,617
-
Issue date Mar 15, 1966
-
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
-
2045348
-
Patent number 2,045,348
-
Issue date Jun 23, 1936
-
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL