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F & M Systems, Co., a division of Fischbach and Moore, Incorporated Patents |
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Assignee: F & M Systems, Co., a division of Fischbach and Moore, Incorporated
Address: Dallas, TX
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4021946 |
Multielement changeable sign display |
May 10, 1977 |
| A sign display comprises a plurality of triangular display elements each having three display surfaces. The display elements are arranged along mutually perpendicular sets of axes to define a matrix display having a display plane. Rotary drive shafts extend through the display element |
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