...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 |
| 7174573 | Decorative multiple layered hat The decorative multiple layered hat has multiple layers. The multiple layers are made of different materials, have different structures and features, are joined together sequentially to form a shape with a surface by different layers being exposed so the hat has an ... | 02/13/2007 |
| 7152250 | Flip brim hat An adjustable hat comprising: a material crown; a first axis situated on a first side of said crown; a second axis situated on a second side of said crown; a brim containing a frame having a first end and a second end; said first end engaging said first axis and sai... | 12/26/2006 |
| 6151712 | Hat A hat is provided to protect a wearer's head from the elements. The hat includes a head receiving structure having an inner surface defining a head receipt cavity. An upper brim is positioned over a first end of the head receiving structure, and a lower b... | 11/28/2000 |
| 5855023 | Ventilated hat A hat includes a band connected to a first side of the hat and configured to be releasably and adjustably connectable to a second side of the hat. The band is positioned and configured to leave a gap between a front of the hat and a wearer's head when the... | 01/05/1999 |
| 5822798 | Hair band A strip shaped hair band having on its hair engaging surface a multiplicity of minute fibre retentive members with, in its preferred embodiment, a strip of decorative backing materials to create a pleasing external appearance, and a strip of ductile mater... | 10/20/1998 |
| 5819318 | Head covering with adjustable sunshade visor and inside ventilation A head covering is provided with an adjustable sunshade visor for shielding the wearer's face from sunshine and an inside ventilation means for supplying air to the inside of the head covering to cool the wearer's head in hot days. The head covering inclu... | 10/13/1998 |
| 5802617 | Ventilated headgear A hat or other headgear having a cord, preferably an elongated flexible plastic tube, with a portion extending across the interior of the hat between opposite sides of a lower portion of the crown, at a location to contact the user's forehead and position... | 09/08/1998 |
| 5787507 | Headgear stabilising and ventilating apparatus A headgear stabilizing and venting apparatus comprises a flexible material having attachment means provided on a first side thereof and a plurality of resilient flexible spacing means provided in a second side thereof. The length of the flexible material ... | 08/04/1998 |
| 5724675 | Cap with crown formed of two segments The cap of the invention has a crown portion comprised of a plurality of segments, a visor extending outwardly from the forward lower edge of the crown portion, and an earflap foldable with respect to the crown and extending rearwardly around the lower pe... | 03/10/1998 |
| 5713083 | Thin-walled plastic hat structure A one-piece, lightweight, molded plastic hat that comprises, in combination, a thin, molded plastic sheet forming a hat wall dome having an inner side, the sheet at the dome everywhere having thickness less than 3/16 inch; the sheet at the dome forming a ... | 02/03/1998 |
| 5657490 | Hat for maintaining a wearer's hairstyle A hat having elongated support members extending from the exterior of the crown of the hat, for supporting the hat upon the head of the wearer, to prevent the hat from causing any undue adverse affect to the wearer's hair style. An alternative embodiment ... | 08/19/1997 |
| 5625901 | Ventilating hat band A hat band is described for attachment to or integration with a hat having a hat band area circumscribing a crown. The hat band includes an elongated flexible base including an inside and an outside surface. A plurality of flexible fingers are spaced apar... | 05/06/1997 |
| 5572746 | Combined hairdo spacer and protective device The present invention involves a hairdo spacer and protective device having a headband, which can be used alone or in combination with at least one arc wherein each arc forms an arch over the base headband and is attached to the base headband by an attach... | 11/12/1996 |
| 5566395 | Liner for hat A disposable liner is fitted against the inside surface of a sweatband of a cap or hat. The liner functions to absorb moisture and oils, and to eliminate odor. The liner wicks moisture away from a user and may hold moisture away from the hat. The liner ma... | 10/22/1996 |
| 5533211 | Slidably repositionable hat A hat having an attached accessory such as a visor is disclosed incorporating a headband formed integrally with a sliding member positioned adjacent the opening in the crown. A track is secured to the crown and slidingly engages the sliding member to perm... | 07/09/1996 |
| 4394782 | Multi purpose head sweatband A head sweatband. The band has a cloth member for wrapping around a person's head. The cloth member has a peak at the top, two flaps at the bottom, and an end fastener to insure a comfortable fit as desired. Stitching on the cloth member reinforces it and... | 07/26/1983 |