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Class Information
Number: 356/144
Name: Optics: measuring and testing > Angle measuring or angular axial alignment > Apex of angle at observing or detecting station > With plural images
Description: Subject matter including means whereby an observer sees plural images of subject matter remote from the observer.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5999252 |
Method for marking workpieces |
Dec. 7, 1999 |
| 5118184 |
Transit for establishing 90 degree angles |
Jun. 2, 1992 |
| 4991125 |
Displacement detector |
Feb. 5, 1991 |
| 4981354 |
Optical differential tilt sensor |
Jan. 1, 1991 |
| 4972592 |
Sextant with adjustable handle |
Nov. 27, 1990 |
| 4967479 |
Position relocation device |
Nov. 6, 1990 |
| 4902128 |
Apparatus for harmonizing a plurality of optical/optronic axis of sighting apparatus to a common axis |
Feb. 20, 1990 |
| 4483598 |
Gun sight |
Nov. 20, 1984 |
| 4428671 |
Optical device for vertically positioning a sextant |
Jan. 31, 1984 |
| 4421407 |
Image combining sextant or the like |
Dec. 20, 1983 |
| 4413906 |
Passive optical rangefinder/sextant having search capability |
Nov. 8, 1983 |
| 4367949 |
Aiming method and means |
Jan. 11, 1983 |
| 4352556 |
Reflector for electrooptical distance measurement |
Oct. 5, 1982 |
| 4339198 |
Geodetic instrument |
Jul. 13, 1982 |
| RE30601 |
Alignment apparatus |
May. 5, 1981 |
| 4245393 |
Instant position finder and course plotter |
Jan. 20, 1981 |
| 4232965 |
Optical sighting device |
Nov. 11, 1980 |
| 4162124 |
Passive optical rangefinder-sextant |
Jul. 24, 1979 |
| 4093378 |
Alignment apparatus |
Jun. 6, 1978 |
| 3992106 |
Error cancelling scanning optical angle measurement system |
Nov. 16, 1976 |
| 3985446 |
Remote controlled, CRT digital display, LLLTV camera-sextant |
Oct. 12, 1976 |
| 3972620 |
Azimuth angle measuring apparatus |
Aug. 3, 1976 |
| 3937579 |
Process for the double-sided exposure of a semiconductor or substrate plates, especially wafers, as well as apparatus for the purpose of parallel and rotational alignment of such a plate |
Feb. 10, 1976 |
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