Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 14/49
Name: Bridges > Draw > Signals
Description: Devices relating to signal apparatus used in connection with drawbridges and usually operated simultaneously with the gates.

Patents under this class:

Patent Number Title Of Patent Date Issued
5186421 Rail finder Feb. 16, 1993

  Recently Added Patents
Range extension techniques for a wireless local area network
Spacers for insulated glass units
RF amplifier with digital filter for polar transmitter
Contact lens material
Method, apparatus, and system for energy efficiency and energy conservation including dynamic cache sizing and cache operating voltage management for optimal power performance
Recombinant vectors for use in position-independent transgene expression within chromatin
Thin film transistor and flat panel display device including the same
  Randomly Featured Patents
Computer main board case
Motor driving apparatus and disk apparatus using the same
System and method for generating horizontal view for SQL queries to vertical database
Inspection method and apparatus, lithographic apparatus, lithographic processing cell and device manufacturing method
Glass captivated heating unit for still or the like
Imaging method and apparatus with exposure control
Method for generation of accurate doppler-free local clock in satellite/wireless networks
Pocket electronic dictionary
Error-proof mounting assembly for twinkle light set to prevent mounting of a light bulb holder into an incorrect socket
Rotary tool