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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 |
| 7312706 | Microprocessor operated early warning ashtray The present invention is a battery powered, portable microprocessor based early warning alarming ashtray. It provides the smoker two different time limited unattended cigarette alarms, as well an alarm for a tipped ashtray; an alarm for a bumped ashtray; an alarm ba... | 12/25/2007 |
| 4907603 | Safety smoke A cigar or cigarette holder comprising a cylindrical housing having an access to remove ashes, an access to insert cigarettes, vent holes, an opening in the housing so as to facilitate the lighting of the cigar or cigarette and a grill rack on the interio... | 03/13/1990 |
| 4201233 | Cigarette retarding and snuffing device A cigarette holder is supported on a framework which is detachably mounted in an ashtray. The holder is an elongated, hollow, cylindrical tube, mounted substantially vertically above the ashtray and having an open upper end and an open lower end. To extin... | 05/06/1980 |
