...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 |
| 7117803 | Apparatus for the pyrolysis of material Apparatus (2) for the pyrolysis of material, which apparatus (2) comprises a pyrolysis chamber (4), an inlet (6) at a first end (8) of the pyrolysis chamber (4), an outlet (10) at a second end (12) of the pyrol... | 10/10/2006 |
| 6877445 | Chamber having discharge base A chamber having a discharge base discharges an oversize fraction of a material and a fine fraction of the material separately from the chamber. The discharge base for the chamber for the heat treatment of the material is capable of separating the fine fraction of t... | 04/12/2005 |
| 5680824 | Process for burning solids with a sliding firebar system A process for burning solids on a sliding fire grate system where each of the combustion control criteria are measured and controlled individually for each grate plate comprising the grate system.... | 10/28/1997 |
| 5137010 | Combustion grate for pellet fueled stove Stoves fueled by biomass pellets are provided with a grate assembly that supports the pellets for combustion and directs combustion gas into the fire. The grate assembly includes a passive grate and a moveable elongate blade spaced above the upper surface... | 08/11/1992 |
| 5103744 | Apparatus for the combustion and/or decomposition of fuel by heat, especially of solid fuels An apparatus for the combustion and/or decomposition of fuel by heat, especially of solid fuels such as peat, coal, wood, straw or garbage, comprising a fuel supply and air supply to a bar grate which is used as combustion site and cooperates with materia... | 04/14/1992 |
| 4884516 | Inclined grate apparatus for use in the combustion chamber of a combustion furnace An inclined grate construction or apparatus in the combustion chamber of a combustion furnace, comprising a plurality of adjacent grate tubes in the longitudinal direction of the grate, said tubes being welded together through flat bars. Below the grate i... | 12/05/1989 |
| 4771710 | Element of stepwise grid for wastes incinerator furnaces with improved air circulation and air-tightness Element of stepwise grid for waste incinerator furnaces of the type forming, together with other similar grid elements, a course or step of a grid borne on a support beam comprising a rear articulated joint and a front thrust portion, provided with a swin... | 09/20/1988 |
| 4732561 | Apparatus for cooling hot material In apparatus for cooling hot material, a material transfer stage is provided in the material inlet of a cooler and acted on by cooling air. The transfer stage has a plurality of air-permeable carrier elements spanning the breadth of the inlet. At least on... | 03/22/1988 |
| 4676176 | Furnace grate This invention relates to a grate for burning solid combustibles and, more particularly, refuse in a fired furnace. The grate comprises a plurality of steps, each step including a plurality of adjacent grate bars with alternate steps of grate bars being m... | 06/30/1987 |
| 4002148 | Grate assembly for a boiler A grate assembly for a shell boiler comprising a fire bed supporting means including a first apertured support member and a second support member mounted for mutual relative movement between a first position in which the apertures in the first member are ... | 01/11/1977 |
| 3951616 | Apparatus for the continuous gasification of coal Coal such as caking coal is continuously gasified, with lump formation inhibited, under superatmospheric pressures and elevated temperatures by treatment with oxygen and water vapor and, if desired, additional gasifying agents in a reactor having a rotata... | 04/20/1976 |