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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 |
| 3964427 | Survival apparatus Apparatus for marking a location which includes a balloon and a bottle of pressurized helium which is selectively connected to the balloon which is in turn secured by a cord which is fed through an indicator as it is released to show the amount of cord th... | 06/22/1976 |
| 3964697 | Deployable wing back pack A pair of sector-shaped wings stored in a pair of spaced apart elongated housings strapped vertically to the back of the user and adapted to be deployed from the housings utilizing rotatably mounted handles secured to the wings. Each housing has a longitu... | 06/22/1976 |
| 3964120 | Comb cleaner A cleaner for combs which comprises a generally circular planar head having radially extending bristle tufts and hard rubber elongated tines disposed about different 180° circumferential portions. The head has a pair of spaced apart recesses which lockab... | 06/22/1976 |
| 3962994 | Dog kennel module A dog kennel in the shape of a rectangular module has an end abutting an exterior wall of a building with a transparent window in the wall between the module and the building interior, so that a pet may be seen from the interior of the building. In one em... | 06/15/1976 |
| 3964002 | Push-button T.V. tuner A push button VHF television tuner includes a fixedly mounted core, which is a conventional tuner turret cylindrical core having an elongated contact strip for each channel connected to reactive components on switch wafers within the turret. Plungers are ... | 06/15/1976 |
| 3963097 | Fire ladder A flexible fire ladder is stowed in a housing mounted between a pair of projecting beams within a decorative overhang over a window of a building. The housing is either underside a pivotly mounted hopper, or is formed by a soffit below the roof overhang a... | 06/15/1976 |
| 3961984 | Space saver dishwasher A compact dishwasher which is particularly adapted for placement in a sink or sink/tub combination and which connects directly to a faucet.... | 06/08/1976 |
| 3962695 | Magnetic key lock and alarm A door lock carries an alarm and battery. The lock includes a tumbler system for cooperating with a serrated key. At the rear end of the key slot are located a pair of switches. One switch is normally open and is closed by the insertion of the key. The ot... | 06/08/1976 |
| 3959989 | Ring having adjustably mounted rapidly rotatable indicia-bearing member A generally U-shaped member has an elongated member carried between the legs of the generally U-shaped member to form a finger ring. A generally planar member is carried for rotation by the elongated member and has indicia disposed on opposite sides there... | 06/01/1976 |
| 3959917 | Flying toy A disc-shaped flying top is formed by an air inflatable elastic envelope having a central cylindrical hub surrounded coaxially by a toroidal rim. Webs radiating between the hub and the rim are inclined in rotor blade fashion to provide a thrust when the t... | 06/01/1976 |
| 3959916 | Whistling scaling toy An improvement to a circular toy intended to be scaled which provides a whistling sound. The whistling sound is produced by a plurality of generally Y-shaped passageways having flexible reeds disposed therein and which are exposed to air currents when the... | 06/01/1976 |
| 3960382 | Ski pole with retractable point A ski pole includes an elongated tubular shaft in which is slideably mounted a rod with a threadably retained pointed tip. A coil spring acting axially between the rod and shaft urges the rod to a position with the pointed end retracted. A handgrip portio... | 06/01/1976 |
| 3960159 | Dental floss holder and applicator Apparatus for holding and storing a spool of dental floss includes first and second generally planar arms mounted on a handle. Each of the arms include first and second sections fixed to each other at an angle which is greater than 90°.... | 06/01/1976 |
| 3958750 | Transparent medicine dispenser with hospital medicine card Disclosed is a package formed of three sheets of polyolefin plastic with an open envelope on one side for a hospital medicine card and a closure-equipped flap on the other side for a pouch holding pills. A hypodermic syringe containing an injection can be... | 05/25/1976 |
| 3958430 | Ornamental ear clip with retaining means pressing against the ear and head An ornamental ear clip includes a decorative portion extending from the helix to the lobe of an ear. The decorative portion is shaped to conform to the free portion of the ear. A pair of resilient wire legs project from the decorative portion to the back ... | 05/25/1976 |
| 3959787 | Refrigeration alarm An alarm for signalling an improperly high temperature in a refrigerated container such as a freezer includes a thermostat within the container and an alarm unit magnetically mounted on the outside of the container. The alarm unit includes batteries for e... | 05/25/1976 |
| 3953845 | Oil level indicator An oil level indicator for an automobile or other engine is provided with a float which is coupled to a generally vertical rod. The generally vertical rod is electrically conductive and is moved axially responsive to the position of the float. A stationar... | 04/27/1976 |
| 3948048 | Coaxial cylindrical fluid drive A fluid drive composed of three coaxial cylindrical members mounted coaxially within a cylindrical housing. The outer of the three coaxial members is fixedly secured to an output shaft and the inner of the three coaxial members is fixedly secured to an in... | 04/06/1976 |
| 3946786 | Tire changing machine improvement An improvement to a known pneumatically operated tire changing apparatus. The improvement includes a sleeve having internal threads and a flange extending substantially perpendicular to the axis of the sleeve.... | 03/30/1976 |
| 3940010 | Cake plate A cake plate has a food receiving top surface which is a centrally pointed conical well having an included angle ranging between 150 and 170 degrees. The top surface is configured to receive and support the domed surface of a cake.... | 02/24/1976 |
| 3937418 | Retractable dog leash A retractable dog leash having a spring loaded wheel for rewinding a portion of the leash which has extended therefrom. Disposed at one axial portion of the wheel is a circular member having a plurality of recesses disposed circumferencially. A blocking m... | 02/10/1976 |
| 3938123 | Driver alert device Alert apparatus worn by a driver includes a motion responsive switch including a pendant wiper associated with a plurality of closely spaced contacts surrounded by an auxiliary contact. A plurality of resistors of different values are respectively coupled... | 02/10/1976 |
| 3934329 | Method of and apparatus for attaching fasteners for cloth and the like A fastener for cloth and similar materials is secured thereto by means of apparatus which includes an elongated member which is tempered in the form of a coil. Absent restraint the coil will move in a direction which is tangential to the envelope of the c... | 01/27/1976 |
| 3934343 | Device for cutting circles Disclosed is a device for cutting circles and the like consisting essentially of an adapter for mounting on one leg of a compass and into which is threaded a blade holder provided with a blade.... | 01/27/1976 |
