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Browse by Date |
| Patent Number |
Title Of Patent |
Date Issued |
| 4230193 |
Rotary drill bit |
Oct. 28, 1980 |
| 4230192 |
Core sampling apparatus and method |
Oct. 28, 1980 |
| 4230191 |
Machine for making underground excavations |
Oct. 28, 1980 |
| 4230190 |
Blow out preventer handling system |
Oct. 28, 1980 |
| 4230189 |
Drilled hole end adjusting arrangement |
Oct. 28, 1980 |
| 4230188 |
Peanut digger-shaker-inverter |
Oct. 28, 1980 |
| 4230187 |
Methods and apparatus for sensing wellhead pressure |
Oct. 28, 1980 |
| 4230186 |
Simplified subsea production wellhead |
Oct. 28, 1980 |
| 4230185 |
Rod operated rotary well valve |
Oct. 28, 1980 |
| 4230184 |
Sulfur extraction method |
Oct. 28, 1980 |
| 4230183 |
Method for treating subterranean, clay-containing earth formations |
Oct. 28, 1980 |
| 4230182 |
Oil recovery method employing alternate slugs of surfactant fluid and fresh water |
Oct. 28, 1980 |
| 4230181 |
In situ method of processing bituminous coal |
Oct. 28, 1980 |
| 4230180 |
Isolating packer units in geological and geophysical measuring casings |
Oct. 28, 1980 |
| 4230179 |
Plate type condensers |
Oct. 28, 1980 |
| 4230178 |
Heat exchanger with pump |
Oct. 28, 1980 |
| 4230177 |
Heat exchange with separately supported and separately removable tubular coils |
Oct. 28, 1980 |
| 4230176 |
Floating radiator tank top |
Oct. 28, 1980 |
| 4230175 |
Heat exchanger element |
Oct. 28, 1980 |
| 4230174 |
Damper assembly |
Oct. 28, 1980 |
| 4230173 |
Closely coupled two phase heat exchanger |
Oct. 28, 1980 |
| 4230172 |
Molding apparatus with a compressed air squeeze plate |
Oct. 28, 1980 |
| 4230171 |
Drapery pleating apparatus and method |
Oct. 28, 1980 |
| 4230170 |
Apparatus for fitting and removing an automobile tire |
Oct. 28, 1980 |
| 4230169 |
Nonreinforced tire having strengthened zones |
Oct. 28, 1980 |
| 4230168 |
Polyurethane tire filling material with plasticizer incorporated therein |
Oct. 28, 1980 |
| 4230167 |
Snow chain bracket for vehicle wheel |
Oct. 28, 1980 |
| 4230166 |
Skirted nut |
Oct. 28, 1980 |
| 4230165 |
Hydrostatic drive for lathes |
Oct. 28, 1980 |
| 4230164 |
Nested template system for cutting one piece closed frames and method therefor |
Oct. 28, 1980 |
| 4230163 |
Log-planing machine |
Oct. 28, 1980 |
| 4230162 |
Wood working machine |
Oct. 28, 1980 |
| 4230161 |
Thermal manual emergency shut off valve |
Oct. 28, 1980 |
| 4230160 |
Adjustable suck-back device for sanitary pumps |
Oct. 28, 1980 |
| 4230159 |
Heddle frame |
Oct. 28, 1980 |
| 4230158 |
Cleaning means for a weaving machine |
Oct. 28, 1980 |
| 4230157 |
Pipe having an end portion, the inner wall of which is provided with a circumferential groove, i... |
Oct. 28, 1980 |
| 4230156 |
Solenoid-actuated valve |
Oct. 28, 1980 |
| 4230155 |
Timed on-off sequence shower valve |
Oct. 28, 1980 |
| 4230154 |
Combined ball and throttle valve |
Oct. 28, 1980 |
| 4230153 |
Back pressure system for slurry pipeline |
Oct. 28, 1980 |
| 4230152 |
Multi-function control valve |
Oct. 28, 1980 |
| 4230151 |
Pinch valve |
Oct. 28, 1980 |
| 4230150 |
Tilting disc check valve |
Oct. 28, 1980 |
| 4230149 |
Fluid flow regulating valve and system |
Oct. 28, 1980 |
| 4230148 |
Check-valve construction |
Oct. 28, 1980 |
| 4230147 |
Constant flow valve |
Oct. 28, 1980 |
| 4230146 |
Fuel feed system |
Oct. 28, 1980 |
| 4230145 |
Fluid control valve |
Oct. 28, 1980 |
| 4230144 |
Seismic support for pendantly suspended body |
Oct. 28, 1980 |
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