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Property and Equipment | 12 Months Ended
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Dec. 31, 2022
Property, Plant and Equipment [Abstract] |
Property and Equipment |
2. | Property and Equipment
At December 31, 2022 and 2021, property and equipment consists of the following:
Property and equipment |  |  |  |  |  |
|  | December 31, |
|  | 2022 |  |  | 2021 |
Office equipment |  | $ | 35,000 |  |  | $ | 34,000 |
Furniture and fixtures |  |  | 5,000 |  |  |  | 5,000 |
Testing equipment |  |  | 37,000 |  |  |  | 37,000 |
Leasehold Improvements |  |  | 25,000 |  |  |  | 25,000 |
Subtotal |  |  | 102,000 |  |  |  | 101,000 |
Less accumulated depreciation |  |  | (96,000 | ) |  |  | (92,000 | )
Total |  | $ | 6,000 |  |  | $ | 9,000 |
Depreciation expense for the years ended December 31, 2022 and 2021 was $4,000 and $7,000, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI https://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126982197&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99779-112916 + Details
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