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Geographic Information (Tables)

6 Months Ended

Nov. 30, 2018

Geographic Information Disclosure [Abstract]

Revenue from External Customers by Geographic Areas [Table Text Block]

	Six Months Ended November 30,						Three Months Ended November 30,
						2018							2017			2018			2017
Revenues from sales to unaffiliated customers:
United States	$	282,000		$	325,000		$	140,000		$	138,000
Asia		1,320,000			1,494,000			672,000			873,000
Europe		914,000			1,069,000			522,000			538,000
South America		127,000			103,000			56,000			28,000
Middle East		131,000			61,000			111,000			35,000
Other		--			6,000			--			2,000
	$	2,774,000		$	3,058,000		$	1,501,000		$	1,614,000

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- References

No definition available.

+ Details

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- Definition

Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph a
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599

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