CA860505A - Echo-responsive apparatus - Google Patents

Echo-responsive apparatus

Info

Publication number
CA860505A
CA860505A CA860505A CA860505DA CA860505A CA 860505 A CA860505 A CA 860505A CA 860505 A CA860505 A CA 860505A CA 860505D A CA860505D A CA 860505DA CA 860505 A CA860505 A CA 860505A
Authority
CA
Canada
Prior art keywords
echo
responsive apparatus
responsive
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
CA860505A
Inventor
Halliday William
W. G. Haslett Roy
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.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
Publication date
Application granted granted Critical
Publication of CA860505A publication Critical patent/CA860505A/en
Expired legal-status Critical Current

Links

CA860505A Echo-responsive apparatus Expired CA860505A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA860505T

Publications (1)

Publication Number Publication Date
CA860505A true CA860505A (en) 1971-01-05

Family

ID=36345935

Family Applications (1)

Application Number Title Priority Date Filing Date
CA860505A Expired CA860505A (en) Echo-responsive apparatus

Country Status (1)

Country Link
CA (1) CA860505A (en)

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