SG4994G - Drill ahead tool - Google Patents

Drill ahead tool

Info

Publication number
SG4994G
SG4994G SG4994A SG4994A SG4994G SG 4994 G SG4994 G SG 4994G SG 4994 A SG4994 A SG 4994A SG 4994 A SG4994 A SG 4994A SG 4994 G SG4994 G SG 4994G
Authority
SG
Singapore
Prior art keywords
drill ahead
ahead tool
tool
drill
ahead
Prior art date
Application number
SG4994A
Inventor
David J Rohweller
Joseph W Pallini Jr
Original Assignee
Vetco Gray Inc Abb
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 US07/200,890 external-priority patent/US4813496A/en
Application filed by Vetco Gray Inc Abb filed Critical Vetco Gray Inc Abb
Priority to SG4994A priority Critical patent/SG4994G/en
Publication of SG4994G publication Critical patent/SG4994G/en

Links

SG4994A 1988-06-01 1994-01-15 Drill ahead tool SG4994G (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SG4994A SG4994G (en) 1988-06-01 1994-01-15 Drill ahead tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/200,890 US4813496A (en) 1988-06-01 1988-06-01 Drill ahead tool
SG4994A SG4994G (en) 1988-06-01 1994-01-15 Drill ahead tool

Publications (1)

Publication Number Publication Date
SG4994G true SG4994G (en) 1994-04-15

Family

ID=26663774

Family Applications (1)

Application Number Title Priority Date Filing Date
SG4994A SG4994G (en) 1988-06-01 1994-01-15 Drill ahead tool

Country Status (1)

Country Link
SG (1) SG4994G (en)

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