E.i. Dupont De Nemours and Company

Extracorporeal Medical Specialties Inc.

Rolf Arne Oscarsson

Nathaniel Convers Wyeth

Albert E Moore

Stun device for personal defense

A wrapped coil-type permeation device wherein the support material has integrally formed therein thickened side strips and end areas suitable for creating a winding core upon which membrane and support material windings are layered and/or an outer covering or casing for the wound coil device. The support material end areas include interlocking portions and fluid ports.

Totally wrapped coil permeation device and artificial kidney

The apparatus described facilitates the registry of image bearing transparencies with a plate having a photosensitive coating thereon. After exposure to light, the plate typically is subjected to chemical milling processes to produce printed circuit boards and the like. The registry apparatus includes upper and lower frames which form an enclosed region therebetween in which the plates and transparencies are placed in sandwich relationship. An outer gasket between the frames permits a vacuum to be applied to the enclosed region. An inner perimeter channel is formed in the opposed faces of each frame to permit a separate vacuum to hold the transparencies in place while the frames are opened to remove, insert or replace a plate. Successive plates may be processed without the necessity of re-registering the transparencies prior to each exposure.

Growing community of inventors

Pedricktown, NJ, United States of America

Rolf Arne Oscarsson