SF INVESTORS LP
Related Filers (2)
Zoom Telephonics, Inc. (2)
MDU COMMUNICATIONS INTERNATIONAL INC (1)
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Ownership (7)
SC 13G
Wednesday, 5/16/2018
Zoom Telephonics, Inc.: Major Shareholders
SC 13G
Tuesday, 5/12/2015
Zoom Telephonics, Inc.: Major Shareholders
SC 13G/A
Friday, 2/14/2014
Zoom Telephonics, Inc.: Major Shareholders
SC 13G
Friday, 2/14/2014
MDU COMMUNICATIONS INTERNATIONAL INC: Major Shareholders
SC 13G
Friday, 2/15/2013
Zoom Telephonics, Inc.: Major Shareholders
SC 13G
Wednesday, 12/19/2012
MDU COMMUNICATIONS INTERNATIONAL INC: Major Shareholders
SC 13G
Tuesday, 9/27/2011
Zoom Telephonics, Inc.: Major Shareholders
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