Quarterly report pursuant to Section 13 or 15(d)

Condensed Statements of Operations (Unaudited)

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Condensed Statements of Operations (Unaudited) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Revenue:    
Total revenue $ 5,346,751 $ 4,360,695
Costs and expenses:    
Cost of ancillary products and assembled components 82,391 22,758
Selling, general and administrative 3,540,870 2,585,070
Research and development 299,180 193,402
Depreciation and amortization 482,064 451,560
Share-based compensation 223,604 166,478
Total costs and expenses 4,628,109 3,419,268
Income from operations 718,642 941,427
Other income (expense):    
Interest expense (168,013) (366,093)
Foreign currency exchange gain 36,476 105,801
Change in estimated fair value of interest rate swap liability (26,142)  
Interest income 715 442
Total other expense (156,964) (259,850)
Income before provision for income taxes 561,678 681,577
Provision for income taxes (101,014) (144,779)
Net income $ 460,664 $ 536,798
Net income per share, basic and diluted $ 0.01 $ 0.01
Weighted-average shares outstanding:    
Basic 40,370,338 39,763,802
Diluted 42,242,557 42,153,901
Product leases and royalties    
Revenue:    
Total revenue $ 5,346,001 $ 4,360,356
Product sales and service    
Revenue:    
Total revenue $ 750 $ 339