SC 13D | SEC Filings Hub

Filing metadata

Accession number: 0001144204-12-025214
Form type: SC 13D
Filer: CLEARSIGN COMBUSTION CORP
CIK: CIK 1434524
Filed: May 01, 2012
Reporting period: Apr 24, 2012
Description: Activist stake

Documents

0001144204-12-025214-index.htm

Complete submission

0001144204-12-025214.txt

directory listing

Filed by

CLEARSIGN COMBUSTION CORP