ORTMAN JOHN C

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Ownership (3)

SC 13G/A
Friday, 2/14/1997
COMMUNICATIONS SYSTEMS INC: Major Shareholders
SC 13G/A
Friday, 2/14/1997
HECTOR COMMUNICATIONS CORP: Major Shareholders
SC 13G/A
Thursday, 3/28/1996
COMMUNICATIONS SYSTEMS INC: Major Shareholders
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