Did You Know...
...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 |
| 5014125 | Television system for the interactive distribution of selectable video presentations An interactive television system employs a telephone connection in a two-way manner to send command signals from a viewer to a central controller to select various presentations and to send the audio portion of such presentations from a central location t... | 05/07/1991 |
| 4941040 | Cable television system selectively distributing pre-recorded video and audio messages A method of, and a system for, selectively delivering still television video with accompanying audio to home subscribers over a cable television system for advertising, promotional or educational purposes. A maximum number of home subscribers can interact... | 07/10/1990 |
| 4734764 | Cable television system selectively distributing pre-recorded video and audio messages A method of, and a system for, selectively delivering still television video with accompanying audio to home subscribers over a cable television system for advertising, promotional or educational purposes. A maximum number of home subscribers can interact... | 03/29/1988 |
