Quarterly report pursuant to Section 13 or 15(d)

BALANCE SHEETS (UNAUDITED)

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BALANCE SHEETS (UNAUDITED) - USD ($)
Jun. 30, 2018
Dec. 31, 2017
CURRENT ASSETS    
Cash and cash equivalents $ 3,421,186 $ 3,974,536
Certificate of deposit (restricted cash) 1,504,818
Certificates of deposit 159,462 263,269
Accounts receivable less allowance for doubtful accounts of $77,067 at June 30, 2018 and $77,067 at December 31, 2017 1,840,094 1,861,949
Inventory 1,718,294 1,658,681
Prepaid expenses 255,888 170,739
TOTAL CURRENT ASSETS 8,899,742 7,929,174
Property and equipment, net 795,484 836,283
Patents, net of accumulated amortization of $220,340 and $203,768 at June 30, 2018 and December 31, 2017, respectively 531,685 483,821
Other assets 31,582 31,582
TOTAL ASSETS 10,258,493 9,280,860
CURRENT LIABILITIES    
Deferred capital gain - current 15,003 22,481
Accounts payable 711,947 454,398
Accrued expenses 539,473 658,060
Accrued payroll and related taxes 187,307 334,903
Accrued tax liability 91,488 115,854
TOTAL CURRENT LIABILITIES 1,545,218 1,585,696
Deferred capital gain - long term 3,762
Deferred tax liability 20,733 21,675
TOTAL LIABILITIES 1,565,951 1,611,133
STOCKHOLDERS' EQUITY    
Common stock, $0.01 par value; 75,000,000 shares authorized, 40,907,991 and 40,731,529 shares issued, 38,170,760 and 37,994,298 shares outstanding at June 30, 2018 and December 31, 2017, respectively 409,080 407,315
Additional paid-in capital 4,358,618 4,216,718
Retained earnings 4,269,048 3,389,898
Stockholder equity before treasury stock 9,036,746 8,013,931
Less: Treasury stock, 2,737,231 shares at June 30, 2018 and December 31, 2017 (344,204) (344,204)
TOTAL STOCKHOLDERS' EQUITY 8,692,542 7,669,727
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 10,258,493 $ 9,280,860