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 |
| 7134208 | Ergonomic handle for vegetation trimmer A vegetation trimmer having a head, a handle and an intermediate portion interconnecting the head to the handle. The intermediate portion is configured to include a first portion, a second portion and a third portion that are each arranged about a respective axis. T... | 11/14/2006 |
| 6948268 | Articulated shovel In accordance with the present invention, an articulated, self-supporting shovel is provided for removing material, such as snow from a surface such as a walkway or driveway. The articulated shovel comprises two main components, a wheeled, lateral body frame and a w... | 09/27/2005 |
| 6269558 | Adjustable snow plow shovel An adjustable snow plow shovel including a T-shaped handle comprised of a horizontal gripping member and an elongated vertical shaft member. The horizontal gripping member has opposed ends and a midpoint. The elongated vertical shaft member has an upper e... | 08/07/2001 |
| 5974703 | Drag-along snow plow apparatus A drag-along snow apparatus for use upon a snow covered ground surface. The snow plow apparatus includes a first substantially planar and elongate extending member and a second substantially planar and elongate extending member which are interconnected al... | 11/02/1999 |
| 5791072 | Snowplow with adjustable handle An adjustable snowplow designed to remove snow and other materials from various surfaces by pushing the snowplow along the surface. The adjustable snowplow has a handle attached to twin, mirror imaged, curved, blades which are adjustably joined to each ot... | 08/11/1998 |
| 5528793 | Multi-purpose squeegee with deflector A multipurpose squeegee intended for use in removing snow, slush, water and other liquids from automobile surfaces and various other surfaces. The squeegee comprises a downwardly open U-shaped base within which are secured two layers of polyethylene foam ... | 06/25/1996 |
| 5511328 | Hand-operated snow plow with adjustable blades A hand-operated snow plow with adjustable blades for plowing snow comprising an elongated housing with a front end and a rear end; a pair of elongated and generally opposed blades each having an end pivotally coupled to the front end of the housing; a bla... | 04/30/1996 |
| 5159769 | Materials handling device Improved materials handling devices for removing materials from surfaces. The devices described herein efficiently and economically remove materials from a surface with little physical effort. Plows for manually removing materials from a surface comprise ... | 11/03/1992 |
| 4796367 | Adjustable, manual snowplow The present invention is directed to an adjustable, manual snowplow which includes a pair of elongated blades, a width adjustment capability, a plowhead, a drive handle attachment, a drive handle, blade edges and at least one carrying handle. The panels a... | 01/10/1989 |
| 4512091 | Snow plow scoop A wheeled snow plow is provided and consists of a tubular frame having a laterally spaced pair of side portions, a rear portion and a V-shaped front portion to form a generally rectangular configuration, three wheel assemblies, one wheel assembly mounted ... | 04/23/1985 |
| 3994081 | Hand-propelled snow plow with motor oscillated blade A push-type snowplow having a forwardly mounted angled blade reciprocated in a fore-and-aft direction by an oscillating motor drive for thrusting snow aside, the oscillatory impulses of the blade easing the manual effort required for snow removal; a non-j... | 11/30/1976 |