Langton William R.
Related Filers (1)
Proto Labs Inc (1)
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Ownership (3)
4
Thursday, 10/4/2012
Proto Labs Inc: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/9/2012
Proto Labs Inc: Statement of changes in beneficial ownership of securities
3
Thursday, 2/23/2012
Proto Labs Inc: Initial statement of beneficial ownership of securities
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