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Patent No. 6745394

Ballistic resistant body covering

A ballistic resistant body covering for protecting the torso, groin and neck area from ballistic missiles.

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Class 356/143 - Artificial reference


Subclass of Class 356 - Optics: measuring and testing
Definition: Subject matter including, for the purpose of establishing
No. of patents: 12
Last issue date: 02/19/2008


NumberTitleIssue Date
7331114Magnetic compass structure
A simple self-contained, hand-held instrument for reading an azimuth or bearing in relation to the earth's magnetic field either out in the field or on the water with substantial accuracy. Means are provided that places the far object into the same focal plane (or f...
02/19/2008
6938350Apparatus for producing a reference plane
The present invention provides an apparatus and method for projecting a reference plane. The invention features emitting a light beam, splitting the light bean into two or more resulting beams, and converting the resulting beams into respective projected lines. The ...
09/06/2005
6917695High contrast, low distortion optical acquisition system for image capturing
Disclosed is an apparatus for forming a high contrast image of a patterned object, such as a fingerprint, including a first lens having a light receiving surface and a viewing surface and a second lens adjacent to the viewing surface of the first lens. A light sourc...
07/12/2005
6104479Laser system
The present invention relates to a laser surveying apparatus capable of forming a measuring reference line and a reference plane by laser light. In the laser surveying apparatus, a mount unit is rotated about a vertical axis, a laser projection unit is ro...
08/15/2000
5999252Method for marking workpieces
A method for laser marking semiconductor wafers wherein marking errors attributable to the laser marking tool are measured for each of the anticipated marking fields. A weighted average error is then calculated, and a correction based thereon is entered i...
12/07/1999
5898484Hand-held distance-measurement device with an enhanced viewfinder
The present invention relates to a portable, hand-held distance-measurement apparatus comprising a laser range finder which is aimed by an active viewfinder. The active viewfinder improves the accuracy of the range finder by giving the user more visual fe...
04/27/1999
5847820Laser apparatus for sensing rotational orientation and levelness
A laser apparatus is provided for sensing rotational orientation or the degree of levelness. The apparatus includes a photosensitive cell and a diode laser directing a laser beam toward the photosensitive cell. Both the diode laser and the photosensitive ...
12/08/1998
5784182Directional sight for instruments
The sight comprises a support adapted for mounting onto an instrument to be aimed at a target, an optical device mounted onto the support for creating an image including a first sighting mark at a first finite distance with respect to the optical device, ...
07/21/1998
5274432Tow vehicle alignment method and apparatus
A method and apparatus for monitoring towed vehicles, such as trailers and the like, which are not visible in a rear view mirror of a tow vehicle. The method consists of, firstly, attaching markers to a towed vehicle such that the markers are visible on e...
12/28/1993
4811062Method for aligning first and second objects relative to each other and apparatus for practicing this method
In a method for aligning first and second objects relative to each other, according to this invention, the first and second objects are arranged opposite to each other, and are aligned in a direction perpendicular to their opposing direction. A grating pa...
03/07/1989
4681438Automatic compensator for compensating collimation error due to two-directional inclination in surveying instruments
An optical plummet mechanism for compensating an error due to an inclination of a surveying instrument comprises a first pendulum suspended in the instrument body interior, a second pendulum suspended in a perpendicular relation to the first pendulum, a f...
07/21/1987
4398821Instrument for measuring angles
An instrument for measuring sun elevation which includes a structure rotating at a controlled, constant speed. By means of a magnet on said structure a pulse is produced once per revolution. This pulse forms a datum point and can coincide with the horizon...
08/16/1983
 
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