CA713229A - Earth strata-hardness sensing systems - Google Patents

Earth strata-hardness sensing systems

Info

Publication number
CA713229A
CA713229A CA713229A CA713229DA CA713229A CA 713229 A CA713229 A CA 713229A CA 713229 A CA713229 A CA 713229A CA 713229D A CA713229D A CA 713229DA CA 713229 A CA713229 A CA 713229A
Authority
CA
Canada
Prior art keywords
sensing systems
earth strata
hardness sensing
hardness
strata
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
CA713229A
Inventor
W. Heimaster John
L. Mcneill Roy
W. Jenkins Frank
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
Publication date
Application granted granted Critical
Publication of CA713229A publication Critical patent/CA713229A/en
Expired legal-status Critical Current

Links

CA713229A Earth strata-hardness sensing systems Expired CA713229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA713229T

Publications (1)

Publication Number Publication Date
CA713229A true CA713229A (en) 1965-07-06

Family

ID=36042520

Family Applications (1)

Application Number Title Priority Date Filing Date
CA713229A Expired CA713229A (en) Earth strata-hardness sensing systems

Country Status (1)

Country Link
CA (1) CA713229A (en)

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