ClearSign Combustion Corporation

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Our patented technologies, embedded in established OEM products as ClearSign Core™, and ClearSign Eye™ and other sensing configurations, enhance the performance of combustion systems and fuel safety systems in a broad range of markets, including the energy (upstream oil production and down-stream refining), commercial/industrial boiler, chemical, petrochemical, transport and power industries.

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Form	Description	Date	Format
REGDEX	Notification of a private placement. The form is not electronically filed with SEC EDGAR System and is available only in paper form until March 2009.	May 7, 2008	Open Notification of a private placement. The form is not electronically filed with SEC EDGAR System and is available only in paper form until March 2009. in HTML.Open Notification of a private placement. The form is not electronically filed with SEC EDGAR System and is available only in paper form until March 2009. in DOC file.Open Notification of a private placement. The form is not electronically filed with SEC EDGAR System and is available only in paper form until March 2009. in PDF file.Open Notification of a private placement. The form is not electronically filed with SEC EDGAR System and is available only in paper form until March 2009. in XLS file.