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W & G Instruments, Inc. Patents |
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Assignee: W & G Instruments, Inc.
Address: Livingston, NJ
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4119839 |
Keyboard mask for general-purpose calculator |
October 10, 1978 |
| In order to adapt a general-purpose calculator to specific tasks, the keyboard of that calculator is covered by a mask including a resilient membrane overlain by a rigid panel having cutouts registering with keys whose function is to be preserved. The cutouts receive extension keys g |
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