CA642135A - Ground surface perforating device - Google Patents

Ground surface perforating device

Info

Publication number
CA642135A
CA642135A CA642135A CA642135DA CA642135A CA 642135 A CA642135 A CA 642135A CA 642135 A CA642135 A CA 642135A CA 642135D A CA642135D A CA 642135DA CA 642135 A CA642135 A CA 642135A
Authority
CA
Canada
Prior art keywords
ground surface
perforating device
surface perforating
ground
perforating
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
CA642135A
Inventor
A. Ceretti Frank
Ceretti Sophie
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 CA642135A publication Critical patent/CA642135A/en
Expired legal-status Critical Current

Links

CA642135A Ground surface perforating device Expired CA642135A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA642135T

Publications (1)

Publication Number Publication Date
CA642135A true CA642135A (en) 1962-06-05

Family

ID=35920658

Family Applications (1)

Application Number Title Priority Date Filing Date
CA642135A Expired CA642135A (en) Ground surface perforating device

Country Status (1)

Country Link
CA (1) CA642135A (en)

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