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William L. Abler Patents |
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Inventor: Abler; William L.
Address: Chicago, IL
No. of patents: 3
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4462684 |
Single wheel celestial navigator |
July 31, 1984 |
| Single wheel celestial navigational instrument and method of determination of local latitude and local hour angle of Aries by a single sighting on the night sky. Greenwich hour angle of Aries and latitude are obtained by simple reference to the instrument's scales and to a watch and Naut |
| 4449817 |
Celestial navigator |
May 22, 1984 |
| Celestial navigational instrument and method of determination of local latitude and local hour angle of Aries by a single sighting on the night sky. Greenwich hour angle of Aries and latitude are obtained by simple reference to the instrument's scales and to a watch and Nautical Almanac; |
| 4294541 |
Bi-periscopic instrument for use in determining terrestrial positions through celestial observat |
October 13, 1981 |
| An instrument having an annular body and a pair of independently and selectively-adjustable periscopes for transmitting the superimposed images of two reference stars (or other selected celestial objects) to a viewer for the purpose of directing orientation of the instrument so that its |
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