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| Number | Title | Issue Date |
| 4551726 | Omni-directional radar and electro-optical multiple corner retro reflectors Methods for making and assembling various orthogonal multifaceted polydeltatrihedral self-supportable corner reflectors. Planar two-dimensional network or pattern products and orthogonal polyhedra products-by-process evolving from the various methods find... | 11/05/1985 |
| 4531128 | Buoyant radar reflector A radar reflective target consisting of a cluster of square corner reflecs configured in a cubical shape. The reflector is comprised of eight smaller blocks of lightweight radar-transparent material, such as plastic foam, with planar reflective surfaces,... | 07/23/1985 |
| 4517569 | Passive retroreflective doppler shift system A retroreflector system which permits the superposition of wide-band dopp-shifts upon a signal incident on a retroreflective device before the search signal is reemitted and returned to the signals source of origin. The retroreflector system has a multis... | 05/14/1985 |
| 4370654 | Apparatus for producing a frequency change of a wage propagating signal The present invention is an apparatus for producing a frequency change of wave propagating energy including microwave radar beams, electro-optical signals, other electro-magnetic signals, acoustic signals, and other wave propagating energy. In the first e... | 01/25/1983 |
| 4352106 | Radar reflectors In order to provide coverage of a full 360 degrees of azimuth even when heeled a radar reflector consists of ten trihedral reflectors directed outwardly of a major axis the inner eight of which are formed in vertically displaced pairs of dihedral reflecto... | 09/28/1982 |
| 4272768 | Multi-purpose survival canteen A survival canteen is disclosed which has a substantially microwave transparent vessel for holding liquid. The vessel has internal microwave-reflective baffles which divide the vessel into chambers. Openings between the chambers allow damped fluid flow th... | 06/09/1981 |
| 4241349 | Apparatus for disposing corner cube reflector for detection In a corner cube radar reflector of the octahedral radar reflector cluster type wherein three planar radar reflecting plates are orthogonally disposed all in planes of non-coincidence to the horizon, an improved holder is disclosed. Typically first and se... | 12/23/1980 |
| 4184155 | Radar target for remotely sensing hydrological phenomena Apparatus for remotely measuring and accessing water status relative to snow and glacial melt, surface runoff, rainfall, evaporation, flow rate, and soil moisture. A radar target located at a selected location on the surface of the earth is designed to co... | 01/15/1980 |
| 4176355 | Radiation reflecting target surface A radiation reflective surface for use with non-reflective type marine vessels has dimple-type retroflective surfaces having right angle corners. The reflecting surface of the target comprises a generally smooth, substantially spherical structure having n... | 11/27/1979 |
| 4148033 | Radar reflector for buoys and other floating objects A radar reflector for buoys and other floating objects comprising six identical corner reflectors circumferentially evenly spaced about the main reflector axis. The axes of symmetry of said six corner reflectors define angles of about 90° with said main ... | 04/03/1979 |
| 4104634 | Ground plane corner reflectors for navigation and remote indication A device to be used as a guidance system for sonar or radar or similar transmissions in which a dihedral reflector is used in association with part of the earth's surface (land or sea) whereby a trihedral reflector results for such transmissions in which ... | 08/01/1978 |
| 4099183 | Self-destroying location marking means Self-destroying location marking means having a predetermined lifespan are rovided for enabling orientation in strange and/or featureless territory.... | 07/04/1978 |
| 4096479 | Radar significant target A corner reflector and method of making the same by molding individual pas with a plurality of corner reflectors formed in each panel, joining the panels in a desired shape and filling the central portion of the target reflector formed thereby with a buo... | 06/20/1978 |
| 4072948 | Light weight radar reflector An array of eight trihedral corner reflectors arranged to be suspended beth a balloon such that they aim into the eight quadrants of a three-dimensional coordinate system aligned vertically and equipped with a set of vanes which cause it to rotate when a... | 02/07/1978 |
| 4037228 | System for augmenting the visual and radar characteristics of an airborne target A system for augmenting the visual and radar characteristics of an airborne target wherein a light source is mounted within the confines of a target body and is adapted to emit a beam of light in at least one direction. A radar reflector is mounted within... | 07/19/1977 |
