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 |
| 8002512 | Material transport A material transport system and method of use is disclosed herein. The system includes a base assembly having an adjustable width, a material support platform hingedly attached to the base assembly, the platform supported angularly above the base assembly by at leas... | 08/23/2011 |
| 7264769 | Apparatus for the delivery of molten metal An apparatus for the delivery of molten metal includes a container that is pivotably supported by a transportable support structure. An actuator mounted upon the support structure and connected to the container is operable to pivot the container relative to the supp... | 09/04/2007 |
| 6663336 | Trough lifting mechanism A lifting mechanism for moving a trough from a lowered position to an elevated having a pair of guide tracks operably coupled to a trough cradle by a pair of roller mechanisms. A lifting arm operably couples the trough cradle to a drive mechanism. As the ... | 12/16/2003 |
| 6474929 | Linear incline lift and dump device A device in which a lifting hopper (82) traverses up along inclined rails (16L) and (16R) and dumps a load into a receptacle of some nature. The lifting hopper (82) will accept a variety of material and debris laden carts, tilt trucks, and wheel barrows. ... | 11/05/2002 |
| 6238165 | Trough lifting mechanism A lifting mechanism for moving a trough from a lowered position to an elevated having a pair of guide tracks operably coupled to a trough cradle by a pair of roller mechanisms. A lifting arm operably couples the trough cradle to a drive mechanism. As the ... | 05/29/2001 |
| 6138721 | Tilt and go load port interface alignment system A tilt and go assembly included as part of a load port interface assembly is disclosed for providing quick and easy attachment and adjustment of the load port interface assembly to a BOLTS interface. When a load port interface assembly according to the pr... | 10/31/2000 |
| 6113340 | Automatic Debris removal system An automatic debris removal system for use in combination with a pre-existing construction hoist of the type including a plurality of telescoping extension members. Such a hoist includes a carriage device which traverses the extended hoist by means of a c... | 09/05/2000 |
| 5797676 | Mobile concrete mixing system transportable onto trucks The present invention relates to a mobile concrete mixing system which substantially comprises: a feeding unit (2); a mixing unit (3); a conveyor belt; and a support structure (5) that embodies a first framework (18) supporting the conveyor belt (4), and ... | 08/25/1998 |
| 5499898 | Apparatus for testing condoms The invention disclosed is an apparatus for automatically testing condoms comprising a retrieving mechanism to present condoms from a large batch receptacle to an orienting mechanism, the orienting mechanism to orient each condom into the same configurati... | 03/19/1996 |
| 5474379 | Portable high volume cement mixer An improved portable, large volume cement mixer that includes a self-supporting inclined plane secured atop a wheeled main frame that provides basic structural support without the need for ancillary lifting equipment. The inclined plane is constructed in ... | 12/12/1995 |
| 4741661 | Wheel lifting and towing apparatus A vehicle mounted automobile "wheel lift" towing mechanism having a power actuated lift boom vertically movable between raised and lowered positions along angularly inclined parallel tracks having cam members operable to impart predetermined vertical tilt... | 05/03/1988 |
| 4696228 | Screen process printing machine A screen printing machine comprises a support frame comprising vertical and horizontal members and having a rear side, a front side spaced horizontally forward therefrom, and a plurality of stanchions projecting upward between the front and rear sides and... | 09/29/1987 |
| 4632627 | Loader, transport and worktable cart A loader, transport and worktable cart having a base supported by front and rear wheels. An upright column supported by the base and in turn supporting a platform for up and down movement of the platform upon operation of a winch. A stop pivotally support... | 12/30/1986 |
| 4520726 | Flat silk-screen printing machine with movable pivoted support A `flat` silk-screen printing machine is disclosed wherein the table is reciprocably displaced along an inclined table support between a raised, advanced, printing position wherein the table is parallel to and immediately below a horizontal screen and a l... | 06/04/1985 |
| 4403898 | Pipe pick-up and laydown machine A pipe pick-up and laydown machine for lifting a joint of pipe from a generally horizontal position on a pipe rack to an inclined and elevated position relative to an elevated rig floor for connection to rig elevators by the drilling crew. The apparatus i... | 09/13/1983 |
| 4279562 | Bucket conveyor A bucket conveyor is provided with a frame having upwardly inclined spaced parallel guide rails which support the bucket for up and down movement along the inclined guide rails, a chain-and-sprocket bucket support and drive mechanism is disposed along eac... | 07/21/1981 |
| 4235566 | Pipe-conveying catwalk A pipe-conveying catwalk has a ramp affixed to the floor of a drilling rig and a main frame ground supported adjacent to a pipe rack so that pipe can be conveyed between the rack and the derrick floor. Pipe is rolled from the rack into a trough which form... | 11/25/1980 |