Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets

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Consolidated Balance Sheets (USD $)
Jun. 30, 2011
Dec. 31, 2010
Current assets:    
Cash $ 7,544,395 $ 6,420,506
Accounts receivable, net 2,032,933 2,048,111
Inventory, net 1,642,095 1,458,588
Prepaid expenses and other 160,252 305,798
Total current assets 11,379,675 10,233,003
Property and equipment 2,459,225 2,370,241
Less accumulated depreciation and amortization 1,952,850 1,850,614
Property, Plant and Equipment, Net, Total 506,375 519,627
Patents and trademarks 544,599 552,470
Less accumulated amortization 450,758 449,783
Finite-Lived Intangible Assets, Net, Total 93,841 102,687
Other assets 7,421 7,421
Total assets 11,987,312 10,862,738
Current liabilities:    
Accounts payable 1,578,508 1,523,377
Accrued liabilities and other 2,663,246 1,298,697
Notes payable to finance companies 9,072 62,411
Deferred revenue, current portion 735,954 654,430
Derivative liabilities, current portion 0 405,524
Total current liabilities 4,986,780 3,944,439
Deferred revenue 841,074 672,924
Derivative liabilities 60,218 2,077,799
Other liabilities 21,843 35,831
Total liabilities 5,909,915 6,730,993
Commitments and contingencies    
Stockholders' equity:    
Preferred stock; $.001 par value; 5,000,000 shares authorized; 9,083 Series B shares and 1,000 Series C shares issued and outstanding at June 30, 2011, and 10,000 Series B shares and 1,000 Series C shares issued and outstanding at December 31, 2010 10 11
Common stock; $.001 par value; 200,000,000 shares authorized; 94,537,936 and 86,319,913 shares issued and outstanding at June 30, 2011 and December 31, 2010, respectively 94,538 86,320
Additional paid-in capital 263,514,167 254,915,713
Accumulated deficit (257,531,318) (250,870,299)
Total stockholders' equity 6,077,397 4,131,745
Total liabilities and stockholders' equity $ 11,987,312 $ 10,862,738