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v3.20.1

Statements of Changes in Stockholders' Equity - USD ($) | Preferred Stock [Member] | Common Stock [Member] | Additional Paid-In Capital [Member] | Treasury Stock [Member] | Accumulated Deficit [Member] | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 |  | $ 793 | $ 14,954,563 | $ (112,109) | $ (4,457,070) | $ 10,368,177
Balance, shares at Dec. 31, 2017 |  | 7,927,774 |  |  |  |
Stock options exercised |  | $ 1 | 10,499 |  |  | 10,500
Stock options exercised, shares |  | 10,700 |  |  |  |
Stock based compensation |  |  | 7,124 |  |  | 7,124
Stock options repurchased |  |  | (242,625) |  |  | (242,625)
Purchase of treasury stock |  |  |  | (381,937) |  | (381,937)
Treasury stock cancelled |  | $ (11) | (456,727) | 456,738 |  |
Treasury stock cancelled, shares |  | (110,823) |  |  |  |
Net income |  |  |  |  | 818,092 | 818,092
Balance at Dec. 31, 2018 |  | $ 783 | 14,272,834 | (37,308) | (3,638,978) | 10,597,331
Balance, shares at Dec. 31, 2018 |  | 7,827,651 |  |  |  |
Stock options exercised |  | $ 2 | 11,424 |  |  | 11,426
Stock options exercised, shares |  | 10,775 |  |  |  |
Stock options repurchased |  |  | (34,076) |  |  | (34,076)
Purchase of treasury stock |  |  |  | (318,204) |  | (318,204)
Treasury stock cancelled |  | $ (10) | (355,502) | 355,512 |  |
Treasury stock cancelled, shares |  | (93,396) |  |  |  |
Net income |  |  |  |  | (75,277) | (75,277)
Balance at Dec. 31, 2019 |  | $ 775 | $ 13,894,680 |  | $ (3,714,255) | $ 10,181,200
Balance, shares at Dec. 31, 2019 |  | 7,745,030 |  |  |  |

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