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Class Information
Number: 340/539.1
Name: Communications: electrical > Condition responsive indicating system > With particular coupling link > Radio
Description: Subject matter where the communication link is by radio waves (i.e., other than light, X, or gamma rays, etc.).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6480108 |
Method and apparatus for tracking and locating a moveable article |
Nov. 12, 2002 |
| 6480115 |
Multiple hazard field marker and components therefor |
Nov. 12, 2002 |
| 6480121 |
Comprehensive information and service providing system |
Nov. 12, 2002 |
| 6476724 |
Crib gate position indicator |
Nov. 5, 2002 |
| 6477452 |
Vehicle service status tracking system and method |
Nov. 5, 2002 |
| 6472981 |
Machine tool probe with wireless signal transmission |
Oct. 29, 2002 |
| 6472982 |
Vehicular communication apparatus, communication method and computer-readable storage medium therefor |
Oct. 29, 2002 |
| 6472983 |
Device for monitoring the anchor or anchor chain |
Oct. 29, 2002 |
| 6472988 |
System for monitoring wearers of protective respiratory equipment |
Oct. 29, 2002 |
| 6472993 |
Singular housing window or door intrusion detector using earth magnetic field sensor |
Oct. 29, 2002 |
| 6469628 |
System and method for using impulse radio technology in the farming field |
Oct. 22, 2002 |
| 6469639 |
Method and apparatus for low power, micro-electronic mechanical sensing and processing |
Oct. 22, 2002 |
| 6469641 |
Marine vessel monitoring system and method |
Oct. 22, 2002 |
| 6470002 |
Detection system for determining positional information about objects |
Oct. 22, 2002 |
| 6466133 |
Apparatus for allergen detection and air/asthma advice provision |
Oct. 15, 2002 |
| 6466139 |
Information system for road traffic |
Oct. 15, 2002 |
| 6462648 |
Vehicle security system |
Oct. 8, 2002 |
| 6462654 |
Electronic message delivery system utilizable in the monitoring of remote equipment and method of same |
Oct. 8, 2002 |
| 6462656 |
Personnel and asset tracking method and apparatus |
Oct. 8, 2002 |
| 6462658 |
Object locator and protection system |
Oct. 8, 2002 |
| 6462660 |
Wireless piconet-based personal electronic property reminder |
Oct. 8, 2002 |
| 6462665 |
Method and apparatus for sending a weather condition alert |
Oct. 8, 2002 |
| 6459371 |
Locating device |
Oct. 1, 2002 |
| 6459372 |
Hand-held computer for identifying hunting and fishing areas and displaying controlling regulations pertaining thereto |
Oct. 1, 2002 |
| 6452499 |
Wireless environmental sensor system |
Sep. 17, 2002 |
| 6448889 |
Satellite G.P.S. connected and bar-coded registered vehicle licence plate satplate |
Sep. 10, 2002 |
| 6448892 |
Receiver for monitoring vehicle tire pressure and associated transmitter for remote control of other elements of the vehicle |
Sep. 10, 2002 |
| 6448894 |
Passive actuation of home security system |
Sep. 10, 2002 |
| 6448903 |
Device for detecting internal pressure of air-filled gunwale protector |
Sep. 10, 2002 |
| 6448905 |
Robotic traffic signalling device |
Sep. 10, 2002 |
| 6444119 |
Bilge water processing system with remote monitoring and control |
Sep. 3, 2002 |
| 6445299 |
Retrofit for patient call system and method therefor |
Sep. 3, 2002 |
| 6445300 |
Personal emergency information transmitter |
Sep. 3, 2002 |
| 6445302 |
Pet wireless doorbell device |
Sep. 3, 2002 |
| 6441732 |
System for displaying tire characteristics |
Aug. 27, 2002 |
| 6437692 |
System and method for monitoring and controlling remote devices |
Aug. 20, 2002 |
| 6437693 |
FSK receiver |
Aug. 20, 2002 |
| 6437696 |
Prisoner tracking and warning system and corresponding methods |
Aug. 20, 2002 |
| 6438393 |
Integrated motion detector in a mobile communications device |
Aug. 20, 2002 |
| 6433675 |
Receiver for electronic key in antitheft device |
Aug. 13, 2002 |
| 6433683 |
Multipurpose wireless video alarm device and system |
Aug. 13, 2002 |
| 6433699 |
Crib gate position indicator |
Aug. 13, 2002 |
| 6433704 |
Communication device of moving body information and communication method thereof |
Aug. 13, 2002 |
| 6429769 |
Security system for firearms and method |
Aug. 6, 2002 |
| 6429791 |
Parked vehicle locator |
Aug. 6, 2002 |
| 6426693 |
Emergency reporting apparatus with self-diagnostic function |
Jul. 30, 2002 |
| 6426701 |
Handwash monitoring system |
Jul. 30, 2002 |
| 6422911 |
Toy device using through-the-body communication |
Jul. 23, 2002 |
| 6424252 |
Paging system for washers and dryers |
Jul. 23, 2002 |
| 6424264 |
System for real-time location of people in a fixed environment |
Jul. 23, 2002 |
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