Quarterly report pursuant to Section 13 or 15(d)

UNCOMPLETED CONTRACTS (Details)

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UNCOMPLETED CONTRACTS (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
[1]
Revenue Recognized $ 1,392,400 $ 1,896,100  
Costs and estimated earnings in excess of billings on uncompleted contracts 61,300   $ 314,300
Revenue recognized (253,000)    
Uncompleted Contracts [Member]      
Revenue Recognized 179,300 499,600  
Less: Billings to date (118,000) (185,300)  
Billings to date 1,143,300 1,642,600  
Revenue recognized (495,800) (1,172,400)  
Revenue contract liabilities $ 647,500 $ 470,200  
[1] *These numbers were derived from the audited financial statements for the year ended December 31, 2018. See accompanying notes.