Apparatus for measuring distances
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 20, 1990
Grant Date -
N/A
app pub date -
Aug 2, 1988
filing date -
Aug 7, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for measuring distances comprising circuit for sending an acoustic signal to a distant location, the distance of which is to be measured, circuit for receiving back reflected acoustic energy, and electronic circuit means for eliminating spurious echoes by providing a threshold signal level above the signal level of said spurious echoes, and a timing circuit to time the interval between the transmission of the acoustic signal and receipt of the acoustic signal.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully