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| Number | Title | Issue Date |
| 4623215 | Holograms A hologram viewing apparatus, an integral direct viewing hologram device and an article useful in the manufacture of hologram devices are predicated upon a particular set of components grouped according to a number of permutations. The viewing apparatus c... | 11/18/1986 |
| 4623214 | Holograms An integral direct viewing hologram device and an article useful in the manufacture of hologram devices are predicated upon a particular set of components grouped according to a number of permutations. The hologram device comprises a venetian blind film h... | 11/18/1986 |
| 4607740 | Mobile grain auger A mobile grain auger on a wheeled frame has a reaction member positioned to engage the ground between the axis of the wheels and the intake end of the auger casing, and a tilt adjustment mechanism connected between the reaction member and the frame to var... | 08/26/1986 |
| 4528166 | Recovery of gold and/or silver from cyanide leach liquors on activated carbon The invention concerns the concentration or recovery of gold or silver from cyanide liquors containing either or both of them by contacting the liquors with activated carbon in order to load it with Au(CN)2- or Ag(CN)2 | 07/09/1985 |
| 4502327 | Road testing apparatus A road testing apparatus has a framework extending over a test portion of road pavement and has tracks with upwardly curved ends along which wheels of a trolley unit roll so that the trolley unit decelerates as it approaches an end position to cause kinet... | 03/05/1985 |
