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Patents and Other Intangible Assets (Details 1) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015
Balance Beginning | $ 2,845,000 | $ 2,329,000
Abandonments and impairments | (1,971,000) | (593,000)
Additions | 913,000 | 1,109,000
Balance Ending | 1,787,000 | 2,845,000
Duplex [Member] |  |
Balance Beginning | 1,131,000 | 481,000
Abandonments and impairments | (757,000) | (19,000)
Additions | 546,000 | 669,000
Balance Ending | 920,000 | 1,131,000
Electrodynamic Combustion Control [Member] |  |
Balance Beginning | 1,714,000 | 1,848,000
Abandonments and impairments | (1,214,000) | (574,000)
Additions | 367,000 | 440,000
Balance Ending | $ 867,000 | $ 1,714,000

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- Definition The adjustment to expense previously capitalized costs of drilling exploratory wells when proved reserves are not found or when the entity obtains information that raises substantial doubt about the economic or operational viability of the project. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 40 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6475089&loc=d3e66625-109467 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 35 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66906256&loc=d3e66150-109466 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 40 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6475089&loc=d3e66584-109467 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6475089&loc=d3e66610-109467 + Details
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