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...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7083042 | Pneumatically actuated beltless conveyor A pneumatically actuated, beltless conveyor assembly includes a housing, a drive system supported by the housing and at least one transport tray supported by the housing and operatively connected to the drive system. The drive system includes a seal-less pneumatic e... | 08/01/2006 |
| 6899218 | Pneumatically actuated beltless conveyor A pneumatically actuated, beltless conveyor assembly includes a housing, a drive system supported by the housing and at least one transport tray supported by the housing and operatively connected to the drive system. The drive system includes a seal-less pneumatic e... | 05/31/2005 |
| 5687641 | Handling sheet material This invention relates to a method and apparatus for handling stretchable sheet material, to form a stack of leaves of such material. In particular, although not exclusively, the invention concerns the handling of dough sheets in the manufacture of biscui... | 11/18/1997 |
| 4711342 | Conveyor transfer apparatus for foundry use and method of conveyor transfer A conveyor transfer system is used in a foundry to transfer an article between first and second article-travel-paths. The system includes a first conveyor which has a pair of beams defining the first article-travel-path. One of the beams is movable in a v... | 12/08/1987 |
| 4620826 | Materials handling apparatus This invention relates to apparatus for transporting articles from one location to another by use of vacuum to suspend them from the underside of a perforated conveyor belt as it moves along the apertured underside of a vacuum box. Embodiments include a v... | 11/04/1986 |
| 4511030 | Article accumulating conveyor system In the conveyor system disclosed herein, a plurality of elongate lifting assemblies are interleaved with parallel moving belts on which articles are transported. Each lifting assembly utilizes an air bag which is supported in an upwardly facing, rigid, U-... | 04/16/1985 |
| 4358010 | Conveyor A conveyor for transporting articles placed in series thereon includes a conveyor track of extruded high density polyethylene having an upwardly opening inverted T-shaped longitudinal slot therein and an endless conveyor chain slidably engaged in the slot... | 11/09/1982 |
| 4071137 | Walking beam conveyor apparatus and method of operating the same Walking beam-type conveyor apparatus having a plurality of elongated, spaced stationary members carried by a supporting frame, and a plurality of elongated, spaced longitudinally movable members parallel with and intermediate the stationary members and ca... | 01/31/1978 |
