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H & K Devices, Inc. Patents |
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Assignee: H & K Devices, Inc.
Address: Mountain View, CA
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5125026 |
Internal telephone intercom system |
June 23, 1992 |
| An internal telephone intercom system including means for connecting to a dedicated telephone communication line, a plurality of telephone sets connected to the line and adapted for telephone communications with locations external to said dedicated line, an audio receiving means at e |
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