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Note 10 - Commitments and Contingencies	9 Months Ended
Note 10 - Commitments and Contingencies	Jun. 30, 2015
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	10. Commitments and Contingencies Legal Matters The Company is the plaintiff in a suit pursuing patent infringement against a competitor in the emissions market. Management believes that it is not currently possible to estimate the impact, if any, that the ultimate resolution of this matter will have on the Company's results of operations, financial position or cash flows.