CA797417A - Ultrasonic presence detector - Google Patents

Ultrasonic presence detector

Info

Publication number
CA797417A
CA797417A CA797417A CA797417DA CA797417A CA 797417 A CA797417 A CA 797417A CA 797417 A CA797417 A CA 797417A CA 797417D A CA797417D A CA 797417DA CA 797417 A CA797417 A CA 797417A
Authority
CA
Canada
Prior art keywords
presence detector
ultrasonic presence
ultrasonic
detector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA797417A
Inventor
John H. Auer, Jr.
P. Huffman Jerry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SPX Technologies Inc
Original Assignee
General Signal Corp
Publication date
Application granted granted Critical
Publication of CA797417A publication Critical patent/CA797417A/en
Expired legal-status Critical Current

Links

CA797417A Ultrasonic presence detector Expired CA797417A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA797417T

Publications (1)

Publication Number Publication Date
CA797417A true CA797417A (en) 1968-10-22

Family

ID=36265417

Family Applications (1)

Application Number Title Priority Date Filing Date
CA797417A Expired CA797417A (en) Ultrasonic presence detector

Country Status (1)

Country Link
CA (1) CA797417A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5764136A (en) * 1996-03-27 1998-06-09 Her Majesty The Queen In Right Of Canada As Represented By Communications Research Centre Ultrasonic detection system for safety of vehicle passengers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5764136A (en) * 1996-03-27 1998-06-09 Her Majesty The Queen In Right Of Canada As Represented By Communications Research Centre Ultrasonic detection system for safety of vehicle passengers

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