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Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 5287002 | Planar multi-layer metal bonding pad A planarized multi-layer metal bonding pad. A first metal bonding pad layer (13) that defines a metal bonding pad is provided. A first dielectric layer (14) is provided with a multitude of vias (17) that covers the first metal bonding pad layer (13), ther... | 02/15/1994 |
| 5286581 | Phase-shift mask and method for making A method is provided for fabricating a phase-shift mask (10, 30). A mask plate (11, 31) is provided. A semitransparent layer (12, 32) is deposited onto the mask plate (11,31). The semitransparent layer (12, 32) is then patterned into a predetermined geome... | 02/15/1994 |
| 5273850 | Chromeless phase-shift mask and method for making A method is provided for forming a right angle (30) on a chromeless phase-shift mask (31). A first phase-shift element (32) and a second phase-shift element (33) are positioned at a ninety degree angle, on the chromeless phase-shift mask (31), wherein the... | 12/28/1993 |
