-
2232012
-
Patent number 2,232,012
-
Issue date Feb 18, 1941
-
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
-
2081155
-
Patent number 2,081,155
-
Issue date May 25, 1937
-
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
-
2045348
-
Patent number 2,045,348
-
Issue date Jun 23, 1936
-
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
-
1956564
-
Patent number 1,956,564
-
Issue date May 1, 1934
-
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL