ATE78747T1 - DRILLING DEVICE FOR PRODUCTION OF DRILL HOLES WITH UNDERCUTTING. - Google Patents

DRILLING DEVICE FOR PRODUCTION OF DRILL HOLES WITH UNDERCUTTING.

Info

Publication number
ATE78747T1
ATE78747T1 AT89115757T AT89115757T ATE78747T1 AT E78747 T1 ATE78747 T1 AT E78747T1 AT 89115757 T AT89115757 T AT 89115757T AT 89115757 T AT89115757 T AT 89115757T AT E78747 T1 ATE78747 T1 AT E78747T1
Authority
AT
Austria
Prior art keywords
undercutting
production
drilling device
drill holes
drill
Prior art date
Application number
AT89115757T
Other languages
German (de)
Inventor
Artur Prof Dr H C Fischer
Original Assignee
Fischer Artur Werke Gmbh
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
Priority claimed from DE3835025A external-priority patent/DE3835025A1/en
Priority claimed from DE3903369A external-priority patent/DE3903369A1/en
Application filed by Fischer Artur Werke Gmbh filed Critical Fischer Artur Werke Gmbh
Application granted granted Critical
Publication of ATE78747T1 publication Critical patent/ATE78747T1/en

Links

AT89115757T 1988-10-14 1989-08-26 DRILLING DEVICE FOR PRODUCTION OF DRILL HOLES WITH UNDERCUTTING. ATE78747T1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3835025A DE3835025A1 (en) 1988-10-14 1988-10-14 DRILLING DEVICE FOR PRODUCING DRILL HOLES WITH UNDERCUT
DE3903369A DE3903369A1 (en) 1988-10-14 1989-02-04 DRILLING DEVICE FOR PRODUCING DRILL HOLES WITH UNDERCUT
EP89115757A EP0363617B1 (en) 1988-10-14 1989-08-26 Drilling device for producing drilled holes with recesses

Publications (1)

Publication Number Publication Date
ATE78747T1 true ATE78747T1 (en) 1992-08-15

Family

ID=27198372

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89115757T ATE78747T1 (en) 1988-10-14 1989-08-26 DRILLING DEVICE FOR PRODUCTION OF DRILL HOLES WITH UNDERCUTTING.

Country Status (1)

Country Link
AT (1) ATE78747T1 (en)

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee