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| Patents for Empire Level Mfg. Corp. | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,463,501 | Aug. 07, 1984 | G.T. Macklin, R.J. Wright | Level Construction and Methods of Constructing a Level | levels | |
| 4,559,714 | Dec. 24, 1985 | R.J. Wright | Pitch Measuring Apparatus | levels | |