CA799054A - Grade sensing and control device - Google Patents

Grade sensing and control device

Info

Publication number
CA799054A
CA799054A CA799054A CA799054DA CA799054A CA 799054 A CA799054 A CA 799054A CA 799054 A CA799054 A CA 799054A CA 799054D A CA799054D A CA 799054DA CA 799054 A CA799054 A CA 799054A
Authority
CA
Canada
Prior art keywords
control device
grade sensing
grade
sensing
control
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
CA799054A
Inventor
E. Long George
G. Anson Howard
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA799054A publication Critical patent/CA799054A/en
Expired legal-status Critical Current

Links

CA799054A Grade sensing and control device Expired CA799054A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA799054T

Publications (1)

Publication Number Publication Date
CA799054A true CA799054A (en) 1968-11-12

Family

ID=36267064

Family Applications (1)

Application Number Title Priority Date Filing Date
CA799054A Expired CA799054A (en) Grade sensing and control device

Country Status (1)

Country Link
CA (1) CA799054A (en)

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