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Class Information
Number: 342/24
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Blind aid
Description: Subject matter wherein a radar system generates the effect of a long antenna by signal processing means rather than by the actual use of a long physical antenna.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7439848 |
Handheld aid for the visually impaired |
Oct. 21, 2008 |
| 6556148 |
Emergency flashing light mechanism |
Apr. 29, 2003 |
| 6486784 |
Process and system enabling the blind or partially sighted to find their bearings and their way in an unknown environment |
Nov. 26, 2002 |
| 6417797 |
System for A multi-purpose portable imaging device and methods for using same |
Jul. 9, 2002 |
| 6198395 |
Sensor for sight impaired individuals |
Mar. 6, 2001 |
| 6127965 |
Method and apparatus for rejecting rain clutter in a radar system |
Oct. 3, 2000 |
| 5982286 |
Object detecting apparatus |
Nov. 9, 1999 |
| 5973618 |
Intelligent walking stick |
Oct. 26, 1999 |
| 5818381 |
Electronic viewing aid |
Oct. 6, 1998 |
| 5508699 |
Identifier/locator device for visually impaired |
Apr. 16, 1996 |
| 5144294 |
Radio frequency message apparatus for aiding ambulatory travel of visually impaired persons |
Sep. 1, 1992 |
| 4935907 |
Electronic homing system |
Jun. 19, 1990 |
| 4907136 |
Echo location system for vision-impaired persons |
Mar. 6, 1990 |
| 4712003 |
Blind person guide device |
Dec. 8, 1987 |
| 4660022 |
System for guiding the blind |
Apr. 21, 1987 |
| 4310903 |
Method of and apparatus for providing information as to the existence or position of objects |
Jan. 12, 1982 |
| 4292678 |
Method of and apparatus for echo location of objects |
Sep. 29, 1981 |
| 4280204 |
Mobility cane for the blind incorporating ultrasonic obstacle sensing apparatus |
Jul. 21, 1981 |
| 4025922 |
Traffic control system |
May. 24, 1977 |
| 3987403 |
Sensory aids for the blind |
Oct. 19, 1976 |
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