CS188821B1 - Drilling bush - Google Patents

Drilling bush

Info

Publication number
CS188821B1
CS188821B1 CS560577A CS560577A CS188821B1 CS 188821 B1 CS188821 B1 CS 188821B1 CS 560577 A CS560577 A CS 560577A CS 560577 A CS560577 A CS 560577A CS 188821 B1 CS188821 B1 CS 188821B1
Authority
CS
Czechoslovakia
Prior art keywords
drilling bush
bush
drilling
Prior art date
Application number
CS560577A
Other languages
English (en)
Inventor
Josef Svercl
Jan Novak
Zdenek Kalab
Original Assignee
Josef Svercl
Jan Novak
Zdenek Kalab
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 Josef Svercl, Jan Novak, Zdenek Kalab filed Critical Josef Svercl
Priority to CS560577A priority Critical patent/CS188821B1/cs
Publication of CS188821B1 publication Critical patent/CS188821B1/cs

Links

CS560577A 1977-08-26 1977-08-26 Drilling bush CS188821B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS560577A CS188821B1 (en) 1977-08-26 1977-08-26 Drilling bush

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS560577A CS188821B1 (en) 1977-08-26 1977-08-26 Drilling bush

Publications (1)

Publication Number Publication Date
CS188821B1 true CS188821B1 (en) 1979-03-30

Family

ID=5401225

Family Applications (1)

Application Number Title Priority Date Filing Date
CS560577A CS188821B1 (en) 1977-08-26 1977-08-26 Drilling bush

Country Status (1)

Country Link
CS (1) CS188821B1 (cs)

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