Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 4005512 | Electrophotographic toner removal brush and method of making same A process for treating a pile material which is ultimately to be made into a toner removal brush used in association with electrophotographic printing which comprises treating the pile substrate material with a saturated aqueous solution of a chemical mix... | 02/01/1977 |
| 3989388 | Fountain-type pipe cleaning brush A handle defining shank is provided and terminates at one end portion in a partial circular loop section of at least 300° angular extent and equipped with generally radially outwardly projecting and circumferentially spaced bristles. The bristles are spa... | 11/02/1976 |
| 3966335 | Multi-digital surgical scrub brush A surgical scrub brush featuring four bristle-lined troughs or furrows or tubular apertures for rapid, efficient and simultaneous scrubbing of the four fingers, and also providing for the scrubbing of the hands, arms and web spaces, including both the out... | 06/29/1976 |
| 3961729 | Shaving cream can having brush attachment A shaving brush is carried upon the lower end of a holder. The holder has the shape of an elongated plate. Close to the upper end of the plate a transverse slot is provided upon its inner surface for attaching the plate to the projecting rim or edge of a ... | 06/08/1976 |
| 3961392 | Cleaning device for shower enclosure tracks A cleaning device particularly suited for use in removing encrusted residue from metallic surfaces, exemplified by surfaces of aluminum channel shaped tracks provided for supporting sliding doors defining a shower enclosure including interchangeable compo... | 06/08/1976 |
| 3943592 | Tongue cleaning device The invention concerns a device for tongue brushing, the use of which maiins positive oral hygiene and application thereto controls proliferation of plaque forming bacteria and the like. It is the object of this invention to remove from the tongue popula... | 03/16/1976 |
| 3939520 | Tooth brush A tooth brush is disclosed in which parallell bristles extend in opposite directions from a central plate-like stem connected to a shaft or a handle. The tooth brush is used for cleaning teeth interspaces and comprises a base plate which abuts the gum and... | 02/24/1976 |
| 3935611 | Brush for the care and cleaning of things and the body A brush for the care and cleaning of things and the body and particularly for body massage, comprising a brush body shaped linearly and/or curved in order to fit an object to be treated, characterized by the fact that multiple-surface brush body is provid... | 02/03/1976 |
| 3936198 | Back rubbing device A cord extends through a cylindrical member. A pair of rubber washer stop devices are frictionally mounted on the cord and are movably positionable on the cord for holding the member in a desired position on the cord. Handles are affixed to the ends of th... | 02/03/1976 |
