ATE36030T1 - Umkehrbare untergrunddurchdringungsvorrichtung. - Google Patents

Umkehrbare untergrunddurchdringungsvorrichtung.

Info

Publication number
ATE36030T1
ATE36030T1 AT85307509T AT85307509T ATE36030T1 AT E36030 T1 ATE36030 T1 AT E36030T1 AT 85307509 T AT85307509 T AT 85307509T AT 85307509 T AT85307509 T AT 85307509T AT E36030 T1 ATE36030 T1 AT E36030T1
Authority
AT
Austria
Prior art keywords
penetration device
underground penetration
reversible
reversible underground
underground
Prior art date
Application number
AT85307509T
Other languages
English (en)
Inventor
Edward J Bouplon
Original Assignee
Allied Steel Tractor Prod Inc
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 US06/662,958 external-priority patent/US4662457A/en
Application filed by Allied Steel Tractor Prod Inc filed Critical Allied Steel Tractor Prod Inc
Application granted granted Critical
Publication of ATE36030T1 publication Critical patent/ATE36030T1/de

Links

AT85307509T 1984-10-19 1985-10-17 Umkehrbare untergrunddurchdringungsvorrichtung. ATE36030T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/662,958 US4662457A (en) 1984-10-19 1984-10-19 Reversible underground piercing device
EP85307509A EP0181712B1 (de) 1984-10-19 1985-10-17 Umkehrbare Untergrunddurchdringungsvorrichtung

Publications (1)

Publication Number Publication Date
ATE36030T1 true ATE36030T1 (de) 1988-08-15

Family

ID=26099401

Family Applications (1)

Application Number Title Priority Date Filing Date
AT85307509T ATE36030T1 (de) 1984-10-19 1985-10-17 Umkehrbare untergrunddurchdringungsvorrichtung.

Country Status (2)

Country Link
AT (1) ATE36030T1 (de)
IN (1) IN165058B (de)

Also Published As

Publication number Publication date
IN165058B (de) 1989-08-12

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee