-
-
-
-
-
-
-
2822578
-
Patent number 2,822,578
-
Issue date Feb 11, 1958
-
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
-
2420709
-
Patent number 2,420,709
-
Issue date May 20, 1947
-
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL