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| All Patents in class 5/86.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,494,591 | Jan. 17, 1950 | O.P. Smith | Invalid lift | ||
| 5,076,448 | Dec. 31, 1991 | J.G. Ballard | Portable hydraulic crane | engine and transmission hoists | |
| 6,276,665 | Aug. 21, 2001 | F.H. Stewart, R.D. Brookshire, T.J. Hawkins, J.H. Blackburn, J.O. Hawkins | Mobile Floor Crane | cranes | |