CA7701A - Improvement in dredging and derrick machines - Google Patents

Improvement in dredging and derrick machines

Info

Publication number
CA7701A
CA7701A CA000007701A CA7701DA CA7701A CA 7701 A CA7701 A CA 7701A CA 000007701 A CA000007701 A CA 000007701A CA 7701D A CA7701D A CA 7701DA CA 7701 A CA7701 A CA 7701A
Authority
CA
Canada
Prior art keywords
derrick
dredging
machines
improvement
derrick machines
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
CA000007701A
Other languages
French (fr)
Inventor
Ralph R. Osgood
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 CA7701A publication Critical patent/CA7701A/en
Expired legal-status Critical Current

Links

CA000007701A Improvement in dredging and derrick machines Expired CA7701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA7701T

Publications (1)

Publication Number Publication Date
CA7701A true CA7701A (en) 1877-08-01

Family

ID=45124249

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000007701A Expired CA7701A (en) Improvement in dredging and derrick machines

Country Status (1)

Country Link
CA (1) CA7701A (en)

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