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| All Patents in class 212/294 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,367,512 | Feb. 06, 1968 | R.A. Kaplan | Floor crane | portable cranes | |
| 5,076,448 | Dec. 31, 1991 | J.G. Ballard | Portable hydraulic crane | engine and transmission hoists | |