CA421384A - Appareil a percer le roc - Google Patents

Appareil a percer le roc

Info

Publication number
CA421384A
CA421384A CA421384A CA421384DA CA421384A CA 421384 A CA421384 A CA 421384A CA 421384 A CA421384 A CA 421384A CA 421384D A CA421384D A CA 421384DA CA 421384 A CA421384 A CA 421384A
Authority
CA
Canada
Prior art keywords
piercing apparatus
rock piercing
rock
piercing
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
CA421384A
Other languages
English (en)
Inventor
B. Aitchison Robert
J. Burch Charles
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.)
Dominion Oxygen Co Ltd
Original Assignee
Dominion Oxygen Co Ltd
Publication date
Application granted granted Critical
Publication of CA421384A publication Critical patent/CA421384A/fr
Expired legal-status Critical Current

Links

CA421384A Appareil a percer le roc Expired CA421384A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA421384T

Publications (1)

Publication Number Publication Date
CA421384A true CA421384A (fr) 1944-07-11

Family

ID=35532343

Family Applications (1)

Application Number Title Priority Date Filing Date
CA421384A Expired CA421384A (fr) Appareil a percer le roc

Country Status (1)

Country Link
CA (1) CA421384A (fr)

Similar Documents

Publication Publication Date Title
CA421384A (fr) Appareil a percer le roc
CA417897A (fr) Appareil a percer
CA417898A (fr) Appareil a percer
CA420534A (fr) Appareil a percer
CA424643A (fr) Appareil a perforer
CA423721A (fr) Appareil d'exploration miniere sous eau
AU123171B2 (en) Improved apparatus for mining
CA419507A (fr) Appareil a transport du bois
CA419971A (fr) Dispositif de perceuse
CA420412A (fr) Appareil d'exploration sous terre
AU1702144A (en) Improved apparatus for mining
AU121748B2 (en) Improved handsawing apparatus
CA422007A (fr) Dispositif a perforer
AU126175B2 (en) Weld-testing apparatus
CA420934A (fr) Appareil d'amenage des capsules
CA421091A (fr) Appareil d'amenage des capsules
CA421747A (fr) Appareil a manipuler des enroulements
CA420906A (fr) Appareil excavateur
CA420882A (fr) Machine a travailler la terre
AU125094B2 (en) Improvements inroad-spraying apparatus
CA422420A (fr) Dispositif de detonation
CA422794A (fr) Dispositif de perforateur detonant de puits d'huile
CA419310A (fr) Appareil a commencer l'action de desurfacage
CA424244A (fr) Appareil a coudre
AU1301944A (en) Improved handsawing apparatus