LM224J semiconductor manufactured by Sylvania, listed as LM224J (circa 1979).

LM1877N semiconductor manufactured by Sylvania, listed as LM1877N (circa 1979).

LM2240 semiconductor manufactured by Sylvania, listed as LM2240 (circa 1979).

LM1877 semiconductor manufactured by Sylvania, listed as LM1877 (circa 1979).

LM1862 semiconductor manufactured by Sylvania, listed as LM1862 (circa 1979).

LM567C semiconductor manufactured by Sylvania, listed as LM567C (circa 1979).

LM567 semiconductor manufactured by Sylvania, listed as LM567 (circa 1979).

LM1845 semiconductor manufactured by Sylvania, listed as LM1845 (circa 1979).

LM1841N semiconductor manufactured by Sylvania, listed as LM1841N (circa 1979).

LM201H semiconductor manufactured by Sylvania, listed as LM201H (circa 1979).

LM1829 semiconductor manufactured by Sylvania, listed as LM1829 (circa 1979).

LM556 semiconductor manufactured by Sylvania, listed as LM556 (circa 1979).

LM1820N semiconductor manufactured by Sylvania, listed as LM1820N (circa 1979).

LM555C semiconductor manufactured by Sylvania, listed as LM555C (circa 1979).

LM1820D semiconductor manufactured by Sylvania, listed as LM1820D (circa 1979).

LM390N semiconductor manufactured by Sylvania, listed as LM390N (circa 1979).

LM1820 semiconductor manufactured by Sylvania, listed as LM1820 (circa 1979).

LM388N semiconductor manufactured by Sylvania, listed as LM388N (circa 1979).

LM1818 semiconductor manufactured by Sylvania, listed as LM1818 (circa 1979).

LM387N semiconductor manufactured by Sylvania, listed as LM387N (circa 1979).