POLAK YAKIL
Related Filers (1)
GRANT GEOPHYSICAL INC (1)
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Ownership (3)
SC 13D/A
Thursday, 7/3/1997
GRANT GEOPHYSICAL INC: Major Shareholders
SC 13D/A
Wednesday, 7/2/1997
GRANT GEOPHYSICAL INC: Major Shareholders
SC 13D
Thursday, 12/26/1996
GRANT GEOPHYSICAL INC: Major Shareholders
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