SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | Note 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying condensed interim financial statements have been prepared, in all material respects, in conformity with the standards of accounting measurements and reflect, in the opinion of management, all adjustments necessary to summarize fairly the financial position and results of operations for such periods in accordance with GAAP. All adjustments are of a normal recurring nature. The results of operations for the most recent interim period are not necessarily indicative of the results to be expected for the full year. Use of Estimates in the Preparation of Financial Statements Cash and Cash Equivalents Fair Value of Financial Instruments Concentration of Credit Risk 250,000 We have no significant off-balance sheet concentrations of credit risk such as foreign exchange contracts, options contracts or other foreign hedging arrangements. We maintain the majority of our cash balances with one financial institution in the form of demand deposits. Accounts receivable are typically unsecured and are derived from transactions with and from entities in the healthcare industry primarily located in the United States. Accordingly, we may be exposed to credit risk generally associated with the healthcare industry. We maintain allowances for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments. The net accounts receivable balance at September 30, 2021 of $ 1,052,196 1,024,370 Inventories Schedule of inventory September 30, 2021 March 31, 2021 Raw materials $ 1,199,069 $ 1,038,094 Finished goods 361,430 477,040 Total gross inventories 1,560,499 1,515,134 Less reserve for obsolescence (39,000 ) (70,000 ) Total net inventories $ 1,521,499 $ 1,445,134 Property and Equipment 15,039 29,916 13,859 32,277 Long-Lived Assets Patents Income Taxes no no Revenue Recognition Deferred Revenue. 250,000 0 .Research and Development Expense Stock-Based Compensation Stock-based compensation expense recognized under ASC 718 for the three and six months ended September 30, 2021 was $ 7,388 15,728 8,997 16,530 Segment Reporting Schedule of service performs electrical engineering activities for external entities Three Months Ended September 30, 2021 Six Months Ended September 30, 2021 Product Service Total Product Service Total Net revenue $ 1,895,196 $ 217,649 $ 2,112,845 $ 3,613,600 $ 507,689 $ 4,121,289 Cost of revenue 1,061,884 106,386 1,168,270 1,900,311 249,436 2,149,747 Gross profit 833,312 111,263 944,575 1,713,289 258,253 1,971,542 Operating income (loss) (281,880 ) 111,263 (170,617 ) (433,972 ) 258,253 (175,719 ) Depreciation and amortization 26,811 — 26,811 53,595 — 53,595 Patent and capital expenditures 5,142 — 5,142 19,423 — 19,423 Equipment and patents, net $ 444,913 $ — $ 444,913 $ 444,913 $ — $ 444,913 Three Months Ended September 30, 2020 Six Months Ended September 30, 2020 Product Service Total Product Service Total Net revenue $ 1,781,260 $ 99,148 $ 1,880,408 $ 3,094,139 $ 133,836 $ 3,227,975 Cost of revenue 841,381 51,432 892,813 1,524,729 68,776 1,593,505 Gross profit 939,879 47,716 987,595 1,569,410 65,060 1,634,470 Operating income (loss) (125,734 ) 47,716 (78,018 ) (292,542 ) 65,060 (227,482 ) Depreciation and amortization 25,784 — 25,784 47,323 — 47,323 Patent and capital expenditures 4,334 — 4,334 10,291 — 10,291 Equipment and patents, net $ 479,085 $ — $ 479,085 $ 479,085 $ — $ 479,085 Recently Issued Accounting Pronouncements |