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O G & E Patents |
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Assignee: O G & E
Address: Oklahoma City, OK
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4864285 |
Method and apparatus for testing contacts to determine if opened or closed |
September 5, 1989 |
| A system for testing the conditions of at least one pair of contacts to determine if the contacts are opened or closed comprising a transmit circuit and a receive circuit. The transmit circuit generates and outputs a test signal having a known frequency and the test signal is optically |
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