CA299756A - Perforatrice a charbon - Google Patents

Perforatrice a charbon

Info

Publication number
CA299756A
CA299756A CA299756A CA299756DA CA299756A CA 299756 A CA299756 A CA 299756A CA 299756 A CA299756 A CA 299756A CA 299756D A CA299756D A CA 299756DA CA 299756 A CA299756 A CA 299756A
Authority
CA
Canada
Prior art keywords
drilling machine
coal drilling
coal
machine
drilling
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
CA299756A
Other languages
English (en)
Inventor
D. Levin Nils
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.)
Jeffrey Manufacturing Co
Original Assignee
Jeffrey Manufacturing Co
Publication date
Application granted granted Critical
Publication of CA299756A publication Critical patent/CA299756A/fr
Expired legal-status Critical Current

Links

CA299756A Perforatrice a charbon Expired CA299756A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA299756T

Publications (1)

Publication Number Publication Date
CA299756A true CA299756A (fr) 1930-04-29

Family

ID=35237075

Family Applications (1)

Application Number Title Priority Date Filing Date
CA299756A Expired CA299756A (fr) Perforatrice a charbon

Country Status (1)

Country Link
CA (1) CA299756A (fr)

Similar Documents

Publication Publication Date Title
CA299756A (fr) Perforatrice a charbon
CA298232A (fr) Machine a miner
CA298233A (fr) Machine a miner
CA303319A (fr) Haveuse
CA299754A (fr) Perforatrice a charbon
CA298462A (fr) Haveuse
CA298463A (fr) Haveuse
CA299752A (fr) Haveuse
CA299753A (fr) Haveuse
CA299755A (fr) Haveuse
CA300236A (fr) Perforatrice a roc
CA305292A (fr) Perforatrice a roc
CA306412A (fr) Perforatrice a roc
CA306687A (fr) Fleuret a roc
CA306688A (fr) Fleuret a roc
CA299607A (fr) Meche de foret
CA302853A (fr) Outil de perforatrice
AU2931430A (en) An improved drilling or boring machine
CA296280A (fr) Fouleuse de voie ferree
CA299980A (fr) Excavateur
CA302482A (fr) Machine d'excavation
CA302681A (fr) Machine d'excavation
CA306370A (fr) Machine a entailler et a percer
CA305191A (fr) Machine a tailler le roc
CA302396A (fr) Gabarit de perceuse