Quarterly report pursuant to Section 13 or 15(d)

Commitments and contingencies Commitments and Contingencies (Details)

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Commitments and contingencies Commitments and Contingencies (Details)
Jun. 30, 2017
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Guarantee of obligations of Eurosite Power, Inc. $ 310,000
Guarantee liability $ 10,000