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| Patents for Index Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,125,478 | Jun. 30, 1992 | R.J. Henningsen | Folding sawhorse | work holding | |
| D330,260 | Oct. 13, 1992 | R.J. Henningsen | Adjustable single rail stand unit | work holding | |