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Lessen Martin: Surgical method and electrode therefor. Steinhilper Frank A, Rosen Alfred H, January 7, 1975: US3858586 (160 worldwide citation)

A surgical electrode is described. This instrument is adapted to fit into a body cavity, to be directed by the surgeon to an operative area in the cavity and then to emit a cauterizing electric current. Several embodiments are disclosed. In one, a blind electrode is positioned and pulsed. In another ...


2
Lessen Martin: Method and apparatus for elimination of airfoil trailing vortices. Drobile Esquire James A, Bramson Esquire Robert S, May 6, 1975: US3881669 (22 worldwide citation)

Herein are disclosed a method and apparatus for eliminating or substantially attenuating the dangerous vortices which typically trail the airfoils of heavier-than-air aircraft in flight. The disclosed method consists of injecting a fluid stream into the core of the vortex (a) in a direction such tha ...


3
Lessen Martin: Extrusion of tubing, sheeting and profile shapes. Lessen Martin, January 3, 1996: EP0689483-A1

Method and apparatus for the extrusion of tubing, sheets and profile shapes, wherein shearing strains in the material being extruded through a die (2) serve to orient the microstructure of the material so that its strength properties are improved in the direction (15) transverse to the extruding dir ...


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Lessen Martin: Procede dextrusion de tubes, de toles et de profiles, et appareil connexe, Extrusion of tubing, sheeting and profile shapes. Lessen Martin, Lex, PIASETZKI & NENNIGER, September 1, 1994: CA2156522

Method and apparatus for the extrusion of tubing, sheets and profile shapes, wherein shearing strains in the material being extruded through a die (2) serve to orient the mi-crostructure of the material so that its strength properties are improved in the direction (15) transverse to the extruding di ...


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Lessen Martin: Down-flow batch mixing system. Lessen Martin, February 21, 1996: GB2292324-A

Improved mixing effectiveness in the mixing of a gas with a liquid suspension is achieved in a batch mixing system having a mixing tank with a hemi-toroidal tank bottom which extends between a radially inner neck portion of the tank to a radially outer cylindrical wall portion of the tank. The hemi- ...


7
Lessen Martin: Extrusion of tubing, sheeting and profile shapes. Lessen Martin, NOVAL William F, September 1, 1994: WO/1994/019123

Method and apparatus for the extrusion of tubing, sheets and profile shapes, wherein shearing strains in the material being extruded through a die (2) serve to orient the microstructure of the material so that its strength properties are improved in the direction (15) transverse to the extruding dir ...


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