William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7380766 | Artist's easel One embodiment of an easel for supporting an artist work piece includes a vertical support member including an interior, a pulley system positioned completely within the interior, the pulley system adapted for moving a horizontal support member on the vertical suppo... | 06/03/2008 |
| 7178776 | Mounting device for sensors A mounting device for contactlessly-operating proximity switches includes a continuous cylindrical or cuboidal recess for holding the proximity switch which is formed by at least two legs. The mounting device can also include at least one through pocket, connected t... | 02/20/2007 |
| 6834840 | Medical device support assembly A medical device support assembly is provided including a base pole, an adjustment pole, and a coupling configured to couple the adjustment pole to the base pole. ... | 12/28/2004 |
| 6382356 | Man lift apparatus The man lift apparatus comprises a handle secured to first and second arms which extend around an upright pole-type support for supporting a user at a selected position upon the upright pole-type support. When the handle is positioned substantially parall... | 05/07/2002 |
| 5857542 | Removable step member and method A step member for being removably secured to a fence post to facilitate a person climbing over a fence. The step member includes a generally integral structure having a protruding lug, including a lug recess. The integral structure of the step member furt... | 01/12/1999 |
| 5829839 | Height-adjustable chair arm assembly having gear-type adjusting mechanism A chair having height-adjustable arm assemblies respectively mounted adjacent opposite sides of a seat. Each arm assembly includes a horizontally elongate armrest connected to an upper end of an arm upright. The arm upright includes a vertically oriented ... | 11/03/1998 |
| 5482240 | Adjustable hanger for suspended ceilings A suspended horizontal ceiling system includes an upper support member vertically below a built ceiling, a suspension member to support a ceiling panel below the support member, and a support arrangement for providing vertical adjustment to the panels of ... | 01/09/1996 |
| 5063274 | Electric fence insulator A plastic insulator for holding electrified wire comprises a support for an electrified wire and a connector device for selectively connecting the support to structures of different types. The connector device includes arms which have fastener receiving h... | 11/05/1991 |
| 4953715 | Boot support A boot support comprises a base, an upright portion extending generally perpendicular to the base and supported thereby, and a cantilevered arm slidable on the upright portion at one end of the arm. The arm is biased by gravity to lock with the upright po... | 09/04/1990 |
| 4908982 | Post plant hanger A one piece rubber coated metal rod bent into a series of angles to provide one end that slips onto and engages a square wooden post (4"×4", 6"×6", or 8"×8") with the other end angularly extending outwardly therefrom and provided with an end hook porti... | 03/20/1990 |
| 4543091 | X-ray marker device For pre-operative radiography preparatory to stereotaxic lateral extradural disc puncture (e.g. as disclosed in U.S. Pat. No. 3,941,127) the patient is placed on his side and a radiographic film is exposed from which the surgeon calculates position and an... | 09/24/1985 |
| 4160344 | Suspension device for a support A suspension device for a support, in particular a support for a fixing panel, in which a body portion is formed as an integral structure and has two laterally extending diverging arms extending from junction points on the body portions. The body portion ... | 07/10/1979 |
| 3966160 | Inflight intravenous bottle holder A bottle holder assembly in a preferred embodiment adapted for use as an inflight intravenous bottle holder aboard an aircraft on an aeromedical airlift mission. The holder comprises: a cradle, generally configurated in the form of an inverted T, with an ... | 06/29/1976 |