| Patents for 1981 (346) |
|---|
| 02/10/1981 | CA1095390A1 Tire breaker belt building apparatus and method of adjusting same |
| 02/10/1981 | CA1095359A1 Solar energy collector |
| 02/10/1981 | CA1095339A2 Marine propulsion device including propeller protection means |
| 02/10/1981 | CA1095338A2 Marine propulsion device including propeller protection means |
| 02/10/1981 | CA1095337A2 Marine propulsion device including propeller protection means |
| 02/10/1981 | CA1095303A2 Hand-held breech-loading firearm |
| 02/10/1981 | CA1095269A1 Rotary mower safety blade and method of making same |
| 02/05/1981 | WO1981000335A1 Stereoscopic television |
| 02/03/1981 | USPP4639 Nectarine tree |
| 02/03/1981 | US4249016 ω-Aryl-13,14-didehydro-PGE compounds |
| 02/03/1981 | US4248795 By oxidation of the corresponding sulfide with an aqueous peracid solution |
| 02/03/1981 | US4248649 Method for producing a composite structure |
| 02/03/1981 | US4248331 Clutch-brake controls for a lawn and garden tractor |
| 02/03/1981 | CA1095021A1 Method of controlling the reversing of a device for driving holes in earth and device for performing same |
| 02/03/1981 | CA1094767A2 Extrusion process of polytetrafluoroethylene tubing materials and apparatus therefore |
| 01/27/1981 | USPP4633 Coop 22 |
| 01/27/1981 | USPP4632 Flowering crab apple tree |
| 01/27/1981 | US4247401 Modified by covalent bonded reactive dyes |
| 01/27/1981 | CA1094281A1 Polymeric acrylonitrile films and method of making same |
| 01/27/1981 | CA1094279A1 Cable repair vulcanizing press |
| 01/27/1981 | CA1094270A2 Method of retreading vehicles tyres |
| 01/27/1981 | CA1094252A1 Deflatable tissue augmentation prosthesis |
| 01/20/1981 | US4246171 Continuous diazotization process, wherein the rate of addition of inorganic nitrite is automatically controlled by polarovoltric means |
| 01/20/1981 | US4246121 Fluid flow transfer device with formed-in-place manifold gasket and method of making same |
| 01/20/1981 | US4246067 High energy ion beams in magnetic fields |
| 01/20/1981 | CA1094046A1 Pneumatic percussion tool |
| 01/20/1981 | CA1093780A1 Method and apparatus for forming a composite mat of directionally oriented lignocellulosic fibrous material |
| 01/20/1981 | CA1093774A1 Injection-blow molding machine having non-splitting injection and blow molds |
| 01/20/1981 | CA1093770A2 Retreading mold |
| 01/13/1981 | US4245120 Antilipimic agents and antiatherosclerotic agents |
| 01/13/1981 | US4245119 Antilipemic agents and antiatherosclerotic agents |
| 01/13/1981 | US4244765 Method for manufacturing a resin-reinforced carbon fiber product |
| 01/13/1981 | CA1093581A1 Process for the production of chlorofluorinated sulfonic acids |
| 01/13/1981 | CA1093447A1 Orbital heat sealing apparatus and method |
| 01/13/1981 | CA1093316A2 Trailing tandem mower |
| 01/13/1981 | CA1093313A1 Grass catcher for rear discharge mower |
| 01/13/1981 | CA1093266A1 Continuous production of cross-linked polyethylene |
| 01/13/1981 | CA1093265A1 Extrusion and mixing apparatus |
| 01/13/1981 | CA1093263A2 Tire retreading system |
| 01/13/1981 | CA1093262A2 Tire retreading system |
| 01/07/1981 | EP0021641A1 Process for preparing arylsulfonyl isocyanates by phosgenation of arylsulfonamides, and the products of the process and their use |
| 01/06/1981 | USRE30469 Preheater for lime kiln |
| 01/06/1981 | USPP4615 Apple tree |
| 01/06/1981 | CA1093110A1 Hand and finger exercise device |
| 01/06/1981 | CA1092777A1 Method and apparatus for continuously sterilizing flat flexible packages |
| 01/06/1981 | CA1092768A1 Method and apparatus for checking the inner surface of tubes by resin casting |