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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 |
| 3989148 | Side panels and loading ramp for pickup truck Two panel assemblies are separately mounted on the side walls of a pickup truck by means of integral legs which fit into stake pockets provided by the truck. When these panel assemblies are so mounted, cross bars join the top portions of opposing panel as... | 11/02/1976 |
| 3977545 | Snowmobile loading apparatus A loading apparatus for pickup trucks and the like is characterized by elongated interchangeable ramp sections releasably secured to the rear end of a special platform on the bed of the pickup truck so that the ramp sections are releasably attachable for ... | 08/31/1976 |
| 3976209 | Pick-up truck loading ramp A folding loading ramp for attachment to the end gate of pickup trucks. The ramp is of such a construction so that it may fold up with the tailgate, take up minimal additional space, and not interfere with the normal use of the end gate of the truck. The ... | 08/24/1976 |
| 3972428 | Equipment trailer ramp construction A self-storing loading ramp construction for equipment trailers including a pair of ramp members pivotally mounted on the trailer and movable between a loading position, in which the ramps extend rearwardly from the trailer and are inclined from the level... | 08/03/1976 |
| 3968892 | Trailer Trailer apparatus for hauling small vehicles such as snowmobiles, motorcycles and the like that includes a wheel mounted main frame, a ramp hingedly mounted on the rear part of the main frame for movement between a transport position and a loading positio... | 07/13/1976 |
| 3961716 | Mobile housing unit A mobile housing unit with an integral garage. The mobile home unit includes a chassis, a wheel structure suspended from the chassis at the rear end thereof, and front wheel receiving seats provided on the suspended wheel structure for receiving the front... | 06/08/1976 |
| 3956901 | Sewer laying system The sewer laying system comprises a tile carrying and service unit operable to provide pressure for operation of the tile setting apparatus, to carry pallets of tile, to discharge individual tile sections into the area of the ditchline occupied by the til... | 05/18/1976 |
| 3941261 | Wheel chair carrying minibus A vehicle of the "Volkswagen" minibus type with sliding side doors and rear engine drive has a tray-like subframe affixed centrally in a cut out portion of the main frame. The subframe has a front wall, a rear wall, one side wall and a planar bottom at a ... | 03/02/1976 |
| 3938567 | Tractor mounted log splitter The log splitter includes a contilivered I-beam that connects at one end to a three point tractor hitch. An hydraulically activated pusher plate slides along the I-beam to engage one end of a log placed on the beam and drives the log through a wedge-shape... | 02/17/1976 |
| 3937344 | Apparatus for transporting and handling large loads of building materials An apparatus for transporting and unloading large loads of wallboard is disclosed. A base frame with wheels allows the apparatus to be moved over a surface. An upper frame is positioned above the base frame. The upper frame includes a curved member that e... | 02/10/1976 |
| 3937259 | Collection device Apparatus for facilitating the collection of debris comprises a ramp having a receiving end and a discharging end, a support for the ramp positions the receiving end adjacent the debris and elevates the discharge end, and a container for the debris is sup... | 02/10/1976 |
| 3933258 | Vehicular transportation system A vehicular transportation system and apparatus therefor is disclosed herein wherein small electrically driven passenger vehicles are carried as a group in a transporter or carrier vehicle. Extendable ramps are carried on the transporter vehicle which may... | 01/20/1976 |
| 3931895 | Collapsible trailer hoist A collapsible framework or chassis equipped on top with a trackway is mounted on a trailer which may be transported from place to place to assist in servicing vehicles. The framework may be alternately collapsed and maintained in a low profile during trav... | 01/13/1976 |
