Bizarre Patents
Pillow with retractable umbrella
A pillow assembly having a supporting assembly and a retractable umbrella assembly that is easily transportable and allows a user to support his/her head while covering their face from sunlight.
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| Number | Title | Issue Date |
| 4165584 | Apparatus for lapping or polishing materials Wafers to be processed are mounted to a lapping plate of a lapping machine using a photosensitive thermoplastic material, such as a photoresist. In a preferred embodiment, the wafers are laminated to a dry film photopolymer disposed on a carrier sheet, af... | 08/28/1979 |
| 4141180 | Polishing apparatus The polishing apparatus utilizes a pressure head that imparts rotary motion to a wafer to be polished during the polishing operation and is of such a structure as to eliminate the need for the use of any bonding agent for holding the wafer in intimate con... | 02/27/1979 |
| 4009539 | Lapping machine with vacuum workholder A lapping machine comprising a removable workholder adapted to be mounted through a vacuum system upon a supporting arm rotatable about a horizontal axis, with the vacuum system functioning to retain a workpiece upon the workholder as the same is rotated ... | 03/01/1977 |
