Class Information
Number: 33/274
Name: Geometrical instruments > Straight-line light ray type > With straight edge instrument or chart
Description: Device having a marker, rule, protractor, square or the like adapted to be used in plotting or in forming geometrical figures on a map or chart, the sides and angles of which correspond to various positions and angles taken by the sighting instrument.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4637143 |
Plotting device |
Jan. 20, 1987 |
| 4459758 |
Topographical surveying instrument |
Jul. 17, 1984 |
| 4349965 |
Four wheel alignment method and apparatus for automotive vehicles |
Sep. 21, 1982 |
| 4327497 |
Marine computer |
May. 4, 1982 |
| 4274203 |
Level device |
Jun. 23, 1981 |
| 4241511 |
Method and apparatus for determining and recording boat compass deviation |
Dec. 30, 1980 |
| 4236313 |
Apparatus for and method of evaluating solar exposure |
Dec. 2, 1980 |
| 4232450 |
Football yardline locating device |
Nov. 11, 1980 |
| 4231162 |
Range finder |
Nov. 4, 1980 |
| 4081912 |
Magnetic bearing plotting and sighting device |
Apr. 4, 1978 |
| 4057906 |
Navigational instruments |
Nov. 15, 1977 |
| 3988838 |
Artists device |
Nov. 2, 1976 |
|
