Resources Contact Us Home
Browse by Category: Main > Information Technology
Class Information
Number: 33/453
Name: Geometrical instruments > Straightedge type > Plural straightedges, relatively moveable > Triangulation (e.g., solving trigonometric functions)
Description: Subject matter including means for the measurement of triangles on the earth"s surface (e.g., surveying) or broadly for performing any similar trigonometric operation for finding a position or location by means of bearings from two fixed points a known distance apart.

Patents under this class:

Patent Number Title Of Patent Date Issued
7748129 Apparatus and method for measuring the trigonometric cosine and trigonometric sine of an angle Jul. 6, 2010
6941667 Teaching sin and cosine instrument Sep. 13, 2005
6823603 Device for enabling a single user to easily and accurately mark right and oblique angles and method for employing same Nov. 30, 2004
5894671 Compass with angle trisecting capability Apr. 20, 1999
5639966 Machine height measuring method and machine height measuring device for surveying machines Jun. 17, 1997
5142787 Means and method for defining a layout Sep. 1, 1992
5029397 Method of measuring a vehicular frame to determine alignment Jul. 9, 1991
4575943 Right angle measuring apparatus Mar. 18, 1986
4381607 Carpenter's tool May. 3, 1983
4347669 Navigational calculating device Sep. 7, 1982
4270278 Wind vector resolution device Jun. 2, 1981
4208805 Navigational calculating device Jun. 24, 1980

  Recently Added Patents
Electrode assembly with centrally wound separator member
Disposable and tamper-resistant RFID lock
System and method for providing restrictions on the location of peer subnet manager (SM) instances in an infiniband (IB) network
Economic filtering system for delivery of permission based, targeted, incentivized advertising
Predicting performance of an integrated circuit
Semiconductor devices and methods for changing operating characteristics and semiconductor systems including the same
In-vehicle electronic control apparatus having monitoring control circuit
  Randomly Featured Patents
Ambulatory infusion pump
Extended shaft and a mold of the extended shaft and an apparatus for molding the extended shaft and a method for molding the extended shaft
Optical bandpass filter using long period gratings
Alternating current power source with improved phase adjusting capability
Filter apparatus and a method of cleaning filter elements thereof
Light device with pivoting plate, in particular for automobiles
Fishing rod grip
Base plate for a carbon brush including means for engaging and disengaging the brush
Acoustic filter for separating and recycling suspended particles
Method for recovery of cellulosic fibers containing latex solids from latex bonded broke