AUSTIN MICHAEL D

Related Filers (2)

Ownership (3)

3
Monday, 11/16/1998
PRODUCTIVITY TECHNOLOGIES CORP /: Initial statement of beneficial ownership of securities
SC 13D
Wednesday, 8/26/1998
PRODUCTIVITY TECHNOLOGIES CORP /: Major Shareholders
SC 13D
Tuesday, 8/25/1998
PARKERVISION INC: Major Shareholders
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