CH4587A - A twin-blade expander bit - Google Patents

A twin-blade expander bit

Info

Publication number
CH4587A
CH4587A CH4587A CH4587DA CH4587A CH 4587 A CH4587 A CH 4587A CH 4587 A CH4587 A CH 4587A CH 4587D A CH4587D A CH 4587DA CH 4587 A CH4587 A CH 4587A
Authority
CH
Switzerland
Prior art keywords
twin
bit
blade expander
expander
blade
Prior art date
Application number
CH4587A
Other languages
French (fr)
Inventor
Victor Guillat
Original Assignee
Victor Guillat
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 Victor Guillat filed Critical Victor Guillat
Publication of CH4587A publication Critical patent/CH4587A/en

Links

CH4587A 1892-02-10 1892-02-10 A twin-blade expander bit CH4587A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH4587T 1892-02-10

Publications (1)

Publication Number Publication Date
CH4587A true CH4587A (en) 1892-06-30

Family

ID=4187471

Family Applications (1)

Application Number Title Priority Date Filing Date
CH4587A CH4587A (en) 1892-02-10 1892-02-10 A twin-blade expander bit

Country Status (1)

Country Link
CH (1) CH4587A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178386B (en) * 1955-03-18 1964-09-24 Wolfgang Ebeling Dipl Ing Drilling machine for the production of large drill holes for mining or the like.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178386B (en) * 1955-03-18 1964-09-24 Wolfgang Ebeling Dipl Ing Drilling machine for the production of large drill holes for mining or the like.

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