...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7044670 | Applicator, and a packaging and applicator device including such an applicator An applicator includes a handle member, a retainer secured to the handle member, an applicator ball rotably mounted in the retainer, and at least one elastically-deformable link element connecting the retainer to the handle member so that the retainer is moveable re... | 05/16/2006 |
| 6887008 | Ballpoint pen tip, ballpoint pen utilizing the ballpoint pen tip and method of manufacturing the ballpoint pen tip There is provided a ballpoint pen tip that minimizes thin spots such as impact thin spots even if upward writing or an impact causes entry of air, allows rapid return to normal writing, and minimizes manufacturing costs. A writing ball and a check ball included in t... | 05/03/2005 |
| 6712539 | Roll-on body powder dispenser A roll-on applicator to delivery a body powder composition, especially baby powder, to areas of skin the require moisture absorption. The roll-on applicator provides superiority over shaker powders in that dust clouds and waste are minimized during application. Furt... | 03/30/2004 |
| 6488431 | Capsule for controllably metering products held in bottles or the like A capsule for controllably metering products held in bottles comprising a ball element for controllably delivering the product on a delivery surface, the ball element housed inside a holding body provided with a cover which can be opened for exposing the ... | 12/03/2002 |
| 6435747 | Double ended direct-feed type writing implement A direct-feed type writing implement having two ends includes an ink tank and a pair of writing points, arranged at opposite ends of the ink tank. An ink collector is provided for each writing point. An air/liquid exchanger adjusts the internal pressure i... | 08/20/2002 |
| 6357948 | Ink transmitting system for liquid-based writing device An ink transmitting system for a liquid-based writing tool comprises an ink storage whose upper end includes a mounting portion having a female screw with a relatively small radius, an opening formed through a central surface of a lower surface of the sto... | 03/19/2002 |
| 5988922 | Valve for correction fluid dispenser A correction fluid dispenser comprises a body member adapted to contain a correction fluid and a tip disposed at the forward end thereof for delivery of the fluid to a surface. The tip terminates in an orifice formed by a circular rim with a spherical bal... | 11/23/1999 |
| 5984559 | Ballpoint pen refill and fabrication method thereof A ballpoint pen refill which can be applied to a retractable ballpoint pen is provided. An ink 2 endowed with a thixotropic property and an ink follower 3 at the rear of this ink are contained within an ink tube 1 comprising a tip holder member 9 and an i... | 11/16/1999 |
| 5957609 | Applicator An applicator includes: a barrel body; a holder having a ball house with an ejecting opening at front end for allowing the liquid from the barrel body to flow out; a ball held in the ball house, as being partially exposed to the outside through the ejecti... | 09/28/1999 |
| 4789399 | Pressurized roller pens and inks for such pens A pressurized roller pen includes a thixotropic viscoelastic ink that is a gel at rest, but becomes a thin liquid under the shearing action of the pen's revolving ball-point. This ink includes a polyacrylic resin polymer, at least one highly polar solvent... | 12/06/1988 |
| 4326508 | Massaging device A manual massaging device having a ball-equipped plate which is centrally apertured for the receipt of a massaging oil containing container which has a dispensing ball at the top and which serves as a handle for the plate during massage.... | 04/27/1982 |
| 3947137 | Socket for a ball point pen A socket for a ball point pen comprises a hollow sleeve receiving a writing ball at the forward end, a rod member forcefully inserted into the sleeve to be pressed at the forward end against the writing ball, and ink passageways defined between the sleeve... | 03/30/1976 |