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President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 3985658 | Extinguishing agent for combustible metal fires A low chloride extinguishing agent for combustible metal fires comprising from substantially 75 to substantially 94 weight percent of sodium carbonate as the basic fire extinguishing material, from substantially 1 to substantially 5 weight percent of a wa... | 10/12/1976 |
| 3972775 | Conversion of cellulosic materials to sugar A process for the production of sugar, mainly glucose, by the enzymatic degradation of cellulosic materials, particularly cellulosic wastes, which comprises hydrolyzing the cellulosic material in the presence of cellulase enzyme to produce a sugar solutio... | 08/03/1976 |
| 3969495 | Thermochemical production of hydrogen A thermochemical reaction cycle for the generation of hydrogen from water comprising the following sequence of reactions wherein M represents a metal and Z represents a metalloid selected from the arsenic-antimony-bismuth and selenium-tellurium subgroups ... | 07/13/1976 |
| 3964969 | Internal core tightener An internal core tightener which is a linear actuated (vertical actuation motion) expanding device utilizing a minimum of moving parts to perform the lateral tightening function. The key features are: (1) large contact areas to transmit loads during react... | 06/22/1976 |
| 3964792 | Explosive fluid transmitted shock method for mining deeply buried coal A method for recovering coal from deeply buried deposits comprising drilling a hole down into a coal seam, filling the hole with water, and periodically detonating an explosive charge at the bottom of the water-filled hole. The water transmits the explosi... | 06/22/1976 |
| 3963994 | Slit injection device A laser cavity electron beam injection device provided with a single elongated slit window for passing a suitably shaped electron beam and means for varying the current density of the injected electron beam.... | 06/15/1976 |
| 3963921 | Method for producing uranium atomic beam source A method for producing a beam of neutral uranium atoms is obtained by vaporizing uranium from a compound UMx heated to produce U vapor from an M boat or from some other suitable refractory container such as a tungsten boat, where M is a metal w... | 06/15/1976 |
| 3957956 | Closed cycle ion exchange method for regenerating acids, bases and salts A method for conducting a chemical reaction in acidic, basic, or neutral solution as required and then regenerating the acid, base, or salt by means of ion exchange in a closed cycle reaction sequence which comprises contacting the spent acid, base, or sa... | 05/18/1976 |
| 3951074 | Secondary lift for magnetically levitated vehicles A high-speed terrestrial vehicle that is magnetically levitated by means of magnets which are used to induce eddy currents in a continuous electrically conductive nonferromagnetic track to produce magnetic images that repel the inducing magnet to provide ... | 04/20/1976 |
| 3947335 | Isotope separation by selective photodissociation of glyoxal Dissociation products, mainly formaldehyde and carbon monoxide, enriched in a desired isotope of carbon, oxygen, or hydrogen are obtained by the selective photodissociation of glyoxal wherein glyoxal is subjected to electromagnetic radiation of a predeter... | 03/30/1976 |
| 3941413 | Quick release latch for reactor scram A simple, reliable, and fast-acting means for releasing a control element and allowing it to be inserted rapidly into the core region of a nuclear reactor for scram purposes. A latch mechanism grips a coupling head on a nuclear control element to connect ... | 03/02/1976 |
| 3933581 | Control rod drive for reactor shutdown A means for rapidly shutting down or scramming a nuclear reactor, such as a liquid metal-cooled fast breeder reactor, and serves as a backup to the primary shutdown system. The control rod drive consists basically of an in-core assembly, a drive shaft and... | 01/20/1976 |
