...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
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| Number | Title | Issue Date |
| 6676355 | Apparatus and method to effectuate pre-lift positioning for a drop furnace cage An apparatus and method whereby precise furnace cage positioning may be effectuated. The apparatus of the instant invention is embodied as a uniquely structured multi-plane positioning device which comprises the positional attachment of a drop furnace cag... | 01/13/2004 |
| 6383104 | Parts carrier with intergral rollers A device used to transfer and support articles during a high temperature heat treatment. The device is used to move articles into a heat treat furnace, hold the articles at an elevated temperature in a controlled atmosphere during the high temperature tre... | 05/07/2002 |
| 6305931 | Rotary hearth furnace with lightened construction A rotary hearth furnace, in particular for the treatment of minerals or oxidized materials, includes a toroidal chamber wherein the bottom wall, i.e., the hearth, rotates as to the rest of the chamber the hearth includes a refractory material layer suppor... | 10/23/2001 |
| 5441376 | Sterilizer loading car transfer apparatus An apparatus for transferring a loading car to a sterilizer chamber having a frame defining an opening, the apparatus comprises a chamber track adapted for supporting the loading car and wherein the chamber track is positioned within the chamber; a carria... | 08/15/1995 |
| 5313048 | High temperature research furnace with V-Shaped Guide Member A high temperature bottom-loading research furnace is provided having a lifting mechanism comprising a V-shaped wheels and corresponding guide members for raising and lowering the furnace oven door. The lifting mechanism facilitates precise opening and cl... | 05/17/1994 |
| 5033926 | Heat retaining means Screens for limiting heat losses from heated material, e.g. bars and slabs in rolling mills. Screens are provided in the form of strings of heat insulating bodies composed of metal shells containing insulating material. These screens may form curtains and... | 07/23/1991 |
| 5000655 | Installation for manufacture of ceramic products Installation for handling ceramic products comprising a closed circuit 1 of carriages 2 passing through furnaces for drying 3 and baking, an unstacking station 7 and a stacking station 6 combined with transverse endless belts, one, 10, running from an emp... | 03/19/1991 |
| 4984952 | Charging appliance for melting units A charging appliance for melting units that work under vacuum or under protective gas atmosphere includes a charging shovel, for holding charging stock, attached to a carriage which transports the charging stock to an advanced position inside the melting ... | 01/15/1991 |
| 4969818 | Truck for firing furnace A truck running on a rail laid in the firing furnace comprises a metallic frame body and a refractory base assembled thereon. At least an outside portion of the refractory base is comprised of car-top bricks each provided at its inward lower part with a f... | 11/13/1990 |
| 4505630 | Article transfer apparatus Apparatus and methods for transferring articles, such as concrete blocks, from a conveyor to a curing kiln and return comprise a carriage movable along a path leading from the block conveyor to any selected one of a number of curing kilns. The carriage su... | 03/19/1985 |
| 4421481 | Furnace for heating slabs, billets, rough castings and the like A furnace for heating all sides of products such as metal slabs, billets, rough castings and the like includes a furnace chamber having a charging end and a discharging end. A plurality of carriages are positioned throughout the length of the furnace cham... | 12/20/1983 |
| 4390040 | Apparatus for accommodating a substance to be shielded from the environment A transportable apparatus for accommodating a substance to be shielded from the environment, which may be disposed in a receptacle, has a pressure vessel provided with an opening which can be sealingly closed by a door with the substance therewithin, and ... | 06/28/1983 |
| 4298305 | Method and apparatus for transferring loads A method and apparatus for transferring loads between selected stations includes a transfer car operable for selective shifting along a predetermined path interposed between first and second stations and a load carrier mounted on the transfer car operable... | 11/03/1981 |
| 4292066 | Material feeder A pair of spaced opposing upstanding surfaces are provided and an inclined upwardly facing ramp surface extends therebetween and includes a lower marginal edge. A partial cylindrical wall extends axially between the upstanding surfaces and opens in a gene... | 09/29/1981 |
| 4290908 | Method and apparatus for treatment of radioactive wastes A radioactive waste discharged from a radioactive substance handling equipment is dried and powdered, and the powder is pelletized. The resulting pellets are stored in an inner vessel of a store vessel having a double structure for a predetermined period ... | 09/22/1981 |
| 4003714 | Device for closing inlet and outlet ports of a tunnel autoclave A tunnel autoclave having guillotine doors at opposite ends has sections of rail fixed to the said doors so as to be aligned with guide rails extending through the said autoclave when the doors are in the open position.... | 01/18/1977 |
| 3980431 | Mobile loading means for sterilizers A sterilizer vessel 1 is mounted in a pit defining an open channel formed between the edges 12 and 14 of the room floor and sterilizer floor respectively. A mobile unit 18 has a leading edge having an elevating cam surface 34 and extending sufficiently fo... | 09/14/1976 |
| 3975130 | Installation for producing glassceramic tiles An installation for producing glassceramic tiles having a device for laying tiles onto the bottom of a roasting kiln located between a tile transfer conveyer and the roasting kiln, the device incorporating a table to receive the tiles from the conveyer, t... | 08/17/1976 |
| 3942658 | Installation for agglomeration of minerals on a continuous circular grate An installation for the agglomeration of minerals including, a rotatable circular track, a plurality of grate-carrying cars which rest on the track and move with it through various treatment zones, and a device for moving the cars relative to the track th... | 03/09/1976 |