2 - Balance Sheet Details: Schedule of Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2022

Tables/Schedules

Schedule of Valuation and Qualifying Accounts

	December 31, 2022	December 31, 2021
Allowance for Doubtful Accounts:
Balance at beginning of year	$ 170,000	$ 170,000
Charges to statement of income	(1,660)	0
Write-offs, net of recoveries	(8,340)	0
Balance at end of year	$  160,000	$ 170,000

	December 31, 2022	December 31, 2021
Inventory Valuation Reserves:
Balance at beginning of year	$   612,000	$   600,000
Charges to statement of income	17,070	41,308
Write-offs	(8,070)	(29,308)
Balance at end of year	$   621,000	$   612,000