-
-
-
-
-
-
3653988
-
Patent number 3,653,988
-
Issue date Apr 4, 1972
-
H01 - BASIC ELECTRIC ELEMENTS
-
3575741
-
Patent number 3,575,741
-
Issue date Apr 20, 1971
-
H01 - BASIC ELECTRIC ELEMENTS
-
3445303
-
Patent number 3,445,303
-
Issue date May 20, 1969
-
H01 - BASIC ELECTRIC ELEMENTS
-
3388013
-
Patent number 3,388,013
-
Issue date Jun 11, 1968
-
H01 - BASIC ELECTRIC ELEMENTS
-
3194699
-
Patent number 3,194,699
-
Issue date Jul 13, 1965
-
H01 - BASIC ELECTRIC ELEMENTS
-
2873222
-
Patent number 2,873,222
-
Issue date Feb 10, 1959
-
C30 - CRYSTAL GROWTH