In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7311223 | Apparatus for dispensing a plurality of powders and method of compounding substances An apparatus for dispensing a plurality of powders, such as colorants for paint, caulking or grout or components of cosmetics, comprising a plurality of containers for holding the powders, a plurality of metering powder pumps, connected to a container or having a co... | 12/25/2007 |
| 7134573 | Apparatus for dispensing a plurality of powders and method of compounding substances An apparatus for dispensing a plurality of powders or flowable materials, such as colorants for paint, caulking or grout or components of cosmetics, comprising a plurality of containers for holding the powders or flowable materials, a plurality of metering pumps, co... | 11/14/2006 |
| 7100804 | Dispenser with a metering device A pressure medium-operated dispenser for dispensing a mass from a storage and dispensing container and including a housing, a dispensing device (13) supported in the housing (12) and having a pressure medium-operated plunger (15) with at least o... | 09/05/2006 |
| 6969015 | Particulate sauce dispensing nozzle Embodiments of the present invention are directed to a dispensing nozzle for dispensing a sauce containing particulates which is configured to reduce clogging of the nozzle by the particulates. In one embodiment, a dispensing nozzle comprises a nozzle body having a ... | 11/29/2005 |
| 6705494 | Hand-held product dispensers having pressurized delivery A hand-held pressurized product dispenser that includes a container with a hand-engageable body portion, a valve mechanism at the top of the container that is movable with respect to the container to cause pressurized discharge of the product, and a valve actuation ... | 03/16/2004 |
| 6494349 | Hand-held product dispensers having pressurized delivery A hand-held pressurized product dispenser that includes a container with a hand-engageable body portion, a valve mechanism at the top of the container that is movable with respect to the container to cause pressurized discharge of the product, and a valve... | 12/17/2002 |
| 5908144 | Coffee dispenser A coffee dispenser includes a housing with a bin for holding coffee and a base with an upright wall for supporting the bin over the base. The bin includes a hopper in the lower end with a dispensing opening therein for dispensing coffee to a coffee filter... | 06/01/1999 |
| 5507305 | Cleaning apparatus and method An apparatus useful for providing a plurality of chemical compositions useful to clean an item, e. g., a tank comprises a plurality of reservoirs each containing a concentrated form of a different chemical composition and each having an outlet through whi... | 04/16/1996 |
| 5353821 | Cleaning apparatus and method An apparatus useful for providing a plurality of chemical compositions useful to clean an item, e.g., a tank, comprises a plurality of reservoirs each containing a concentrated form of a different chemical composition and each having an outlet through whi... | 10/11/1994 |
| 5141162 | Variable inlet spraying apparatus A liquid spray gun whih includes an improved flow rate control. The improved flow rate control results from a valve in the supply inlet line which can restrict the flow of liquid material from the supply container. The ability to vary the flow rate is imp... | 08/25/1992 |
| 5004351 | Reaction injection molding machine A reaction injection molding machine provides for independent spring actuation of pistons in metering cylinders. Individual compression of the springs is provided by hand screw compression mechanisms. The pressure level of the liquid in each metering cyli... | 04/02/1991 |
| 4971091 | Dispenser for irrigation chemicals with fail-safe antisiphon valve A dispenser for irrigation chemicals includes an antisiphon or vacuum breaker valve which includes redundant valve members disposed at differing levels to on the one hand ensure communication of ambient pressure to the valve outlet, and on the other hand ... | 11/20/1990 |
| 4967957 | Injection mixer An injection mixing apparatus is provided for use with a spraying system carried on a mobile vehicle of the type including a spray bar, a carrier reservoir for holding a supply of a liquid carrier medium, a main pump interposed between the carrier reservo... | 11/06/1990 |
| 4915119 | Cleaning apparatus and method An apparatus useful for providing a plurality of chemical compositions useful to clean an item, e.g., a tank, comprises a plurality of reservoirs each containing a concentrated form of a different chemical composition and each having an outlet through whi... | 04/10/1990 |
| 4907618 | Dispenser for irrigation chemicals Beneficial chemicals and water are dispensed by an irrigation system to vegetation served thereby. The irrigation system includes a water flow path in part defined by a housing of the inventive irrigation chemical dispenser. The dispenser housing includes... | 03/13/1990 |
| 4817687 | Filling device A filling device for sterile filling of containers. A flexible temporary storage container is placed in a dosage chamber and exposed to external over-pressure and under-pressure, respectively. The filling goods is sucked into the temporary storage contain... | 04/04/1989 |
| 4685494 | Filling device A filling device for sterile filling of containers. A flexible temporary storage container is placed in a dosage chamber and exposed to external over-pressure and under-pressure, respectively. The filling goods is sucked into the temporary storage contain... | 08/11/1987 |
| 4614162 | Apparatus and method for distribution of seasonings and like granular/powdered materials A dispenser for distributing food seasoning and other cohesive solids includes a rotating auger enclosed by a tube which is fed via a hopper. The auger is divided into two sections, each with a different pitch. In a first metering section, the pitch is na... | 09/30/1986 |
| 4502615 | Apparatus for a controlled supply of powder to a mold for continuous casting An apparatus for a controlled supply of a powder to a mold for continuous casting has a vibrating conveyor with a delivery edge and a retaining wall carried by the vibrating conveyor. The retaining wall extends along the delivery edge and defines a flow c... | 03/05/1985 |
| 4436226 | Material metering device A metering device for particulate material in which backups and caking of material is inhibited by the provision of a "live" metering gate consisting of an upper blocking section and a lower material contacting surface. The lower surface is continually mo... | 03/13/1984 |
| 4359176 | Powered hopper door A power actuated closure assembly for controlling the discharge of materials from an opening in the bottom of a hopper, the assembly including a frame having a sliding door support portion with a power actuator support portion extending longitudinally the... | 11/16/1982 |
| 4250987 | Flow control gate apparatus This invention is a flow control gate apparatus mounted between a discharge opening of a hopper assembly and between a portion of a conveyor assembly operable to control amount of grain or the like being discharged into the interior of the conveyor means.... | 02/17/1981 |
| 4238076 | Apparatus for building up and repairing the refractory lining of industrial furnaces and hot-running vessels In an apparatus for building up and repairing a refractory lining of an industrial furnace, the material is centrifugally deposited by a wheel rotated by a vertical drive shaft passing through a hopper and a mixing chamber connected thereto. A shut-off be... | 12/09/1980 |