CA1038814A - Grue-derrick - Google Patents

Grue-derrick

Info

Publication number
CA1038814A
CA1038814A CA251,349A CA251349A CA1038814A CA 1038814 A CA1038814 A CA 1038814A CA 251349 A CA251349 A CA 251349A CA 1038814 A CA1038814 A CA 1038814A
Authority
CA
Canada
Prior art keywords
mast
crane
boom
base
lay
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
CA251,349A
Other languages
English (en)
Inventor
Jack J. Brewer
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.)
SAM P WALLACE Co
Original Assignee
SAM P WALLACE Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SAM P WALLACE Co filed Critical SAM P WALLACE Co
Priority to CA251,349A priority Critical patent/CA1038814A/fr
Application granted granted Critical
Publication of CA1038814A publication Critical patent/CA1038814A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Jib Cranes (AREA)
CA251,349A 1976-04-28 1976-04-28 Grue-derrick Expired CA1038814A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA251,349A CA1038814A (fr) 1976-04-28 1976-04-28 Grue-derrick

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA251,349A CA1038814A (fr) 1976-04-28 1976-04-28 Grue-derrick

Publications (1)

Publication Number Publication Date
CA1038814A true CA1038814A (fr) 1978-09-19

Family

ID=4105818

Family Applications (1)

Application Number Title Priority Date Filing Date
CA251,349A Expired CA1038814A (fr) 1976-04-28 1976-04-28 Grue-derrick

Country Status (1)

Country Link
CA (1) CA1038814A (fr)

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