Abstract: A computerized document management system for managing a document acted upon by at least one participant in creating, evaluating or revising the document is provided. The system includes a segmenter which divides the document into a plurality of segments based on the content of the document. The system also includes a comment receiver which receives comments from at least one participant, at least a portion of the comments pertaining to at least one of the plurality of segments of the document. The system further includes a comment associator which associates each comment of the portion of comments to the segment to which the each comment pertains.

Abstract: A reflector antenna system with reduced blockage effects is provided by placing a compensating reflector between the surface of the main curved reflector and its primary feed to intercept illuminating radiation which would otherwise be blocked by the feed. The compensating reflector reflects the intercepted radiation with a beam pattern which is essentially identical to the substractive blockage pattern. The compensating reflector is spaced from the main reflecting surface to place its beam pattern in phase opposition to the blockage pattern to cancel common components from the blockage pattern.

Abstract: A bell-like apparatus adapted to be lowered to the ocean floor and controllably positioned to cover an uncontrolled well. The control means includes a plurality of anchors which are dispersed about the well to guide a series of tensioning cables. The latter are attached to the bell, threaded through the respective anchors, and thereafter led to the surface of the water by an elongated conduit whereby they can be controlled.

Abstract: An improvement of a ball type valve having capability of conventional closing by quarter turn rotation of the ball, plus pressure sealing of the valve when closed by rocking about a tangential axis. It provides improved structure that permits both the closing and the pressure sealing with less than a half turn of a control handle for each. It simplifies and strengthens the working parts compared to an earlier valve by the same inventor.

Abstract: An improvement of a ball type valve which includes structure for conventional closing by quarter turn rotation of the ball, plus pressure sealing of the valve when closed by rocking about a tangential axis. It provides structure to permit both the closing and the pressure sealing, with less than a half turn of a control handle for each.