CA530504A - Grue de chevalement - Google Patents

Grue de chevalement

Info

Publication number
CA530504A
CA530504A CA530504A CA530504DA CA530504A CA 530504 A CA530504 A CA 530504A CA 530504 A CA530504 A CA 530504A CA 530504D A CA530504D A CA 530504DA CA 530504 A CA530504 A CA 530504A
Authority
CA
Canada
Prior art keywords
derrick
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
CA530504A
Other languages
English (en)
Inventor
L. Alexander Emmett
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.)
GEORGE E FAILING Co
Original Assignee
GEORGE E FAILING Co
Publication date
Application granted granted Critical
Publication of CA530504A publication Critical patent/CA530504A/fr
Expired legal-status Critical Current

Links

CA530504A Grue de chevalement Expired CA530504A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA530504T

Publications (1)

Publication Number Publication Date
CA530504A true CA530504A (fr) 1956-09-18

Family

ID=35684258

Family Applications (1)

Application Number Title Priority Date Filing Date
CA530504A Expired CA530504A (fr) Grue de chevalement

Country Status (1)

Country Link
CA (1) CA530504A (fr)

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