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 |
| 4589787 | Printer with rotatable print band In a small-sized printer having hammers provided within a type ring according to the invention, a direction in which the hammer is moved is changeable over selectively so that printing may be carried out in different positions. Also, electronic apparatus ... | 05/20/1986 |
| 4241655 | Printer with indexed orientation of print head relative to web movement The invention contemplates a non-rotary printing machine which accommodates continuously moving web along a single path of movement, for recycled precision imprinting of specially characterized information; the printing involves cooperative use of a print... | 12/30/1980 |
| 4057015 | Bar code printing system A printing system with a rotatable print drum having rows of raised printing elements disposed about its periphery in arcuate columns, each column having matching bar printing elements positioned at diametrically opposite locations. An impactor assembly c... | 11/08/1977 |
