...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7277029 | Using language models to expand wildcards A method of inputting text is provided in which a first portion of an input string is received from a user, the first portion of the input string including at least one keystroke representing a wildcard character of the input string. A second portion of the input st... | 10/02/2007 |
| 7056043 | Keyboard for a mobile device An apparatus has a keyboard panel with a QWERTY array of alphabetic key actuation indicia. The apparatus further has a QWERTY array of keys that are free of alphabetic key actuation indicia, and are located adjacent to corresponding alphabetic key actuation indicia ... | 06/06/2006 |
| 6869011 | Apparatus and method for controlling an electrical switch array An electrical switching apparatus configured for low power operation includes: (a) a plurality of switching devices arranged in a switching array permitting sensing of individual switching events by selected switching devices; (b) a switching control device coupled ... | 03/22/2005 |
| 5841635 | Flexible printed circuit for split keyboard and method of assembly Relatively moveable portions of a flexible printed circuit member are interconnected by a web that extends between the moveable portions and is disposed in a cavity within a hinge interconnecting separately moveable parts of a split keypad assembly. The w... | 11/24/1998 |
| 5514855 | Computer keyboard adapter providing large size key surfaces An adapter device, for use with a standard personal computer having affixed thereto a keyboard, is comprised of a molded rigid panel which is provided with a plurality of over-sized keys. The adapter is intended to simplify standard personal computer inpu... | 05/07/1996 |
| 5204511 | Alphanumeric keyboard An alphanumeric keyboard comprises a plurality of key operated switches and a cover frame which covers the switches and has bosses for receiving switch operating rams carried by key buttons having projections which receive the rams and which fit into the ... | 04/20/1993 |
| 5160832 | Front panel unit for electronic equipment A front panel unit for allowing user communication with electronic equipment includes an injection molded plastic front panel which has integrally formed keys which include are each connected by a spring strip to the body of the front panel. These keypads... | 11/03/1992 |
| 5089690 | Keyboard overlay An overlay is described for a keyboard wherein the keyboard includes a plurality of convex, depressible keys that extend above openings in a panel surface, each key having an associated function indication. The overlay comprising a molded plastic, planar ... | 02/18/1992 |
| 5021638 | Keyboard cover A protective cover or boot for a keyboard array is provided which prevents entry of contaminants, such as water, dust and the like into the interior of the keyboard assembly. A membrane of a resilient material, such as a silicone rubber, is used to form a... | 06/04/1991 |
| 4638151 | Keyboard of an electronic apparatus A plurality of keytops are held by means of a single leaf spring to prevent erroneous insertion of the keytops into opening portions formed in a frame and to prevent the keytops from being removed from the opening portions. For prevention of unstable move... | 01/20/1987 |
| 3974905 | Key arm mechanism A key arm mechanism for keys of a typewriter or data entry device in which a uniform spring rate is achieved by varying the cross-sectional area of the key arms as a direct relation to the distance of the key support posts from a cantilever point. The ent... | 08/17/1976 |
| 3964594 | Keyboard of elastic material for office machines In an office machine keyboard comprising a plurality of keys formed by an array of areas of layer of elastic material, each key is provided with an identifying character in relief on an insert. The insert is embedded in the elastic layer so that the chara... | 06/22/1976 |