GB8508622D0 - Rotary drill bits - Google Patents

Rotary drill bits

Info

Publication number
GB8508622D0
GB8508622D0 GB858508622A GB8508622A GB8508622D0 GB 8508622 D0 GB8508622 D0 GB 8508622D0 GB 858508622 A GB858508622 A GB 858508622A GB 8508622 A GB8508622 A GB 8508622A GB 8508622 D0 GB8508622 D0 GB 8508622D0
Authority
GB
United Kingdom
Prior art keywords
drill bits
rotary drill
rotary
bits
drill
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
GB858508622A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NL Petroleum Products Ltd
Original Assignee
NL Petroleum Products Ltd
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 NL Petroleum Products Ltd filed Critical NL Petroleum Products Ltd
Priority to GB858508622A priority Critical patent/GB8508622D0/en
Publication of GB8508622D0 publication Critical patent/GB8508622D0/en
Priority to EP86302375A priority patent/EP0197741A3/en
Priority to CA000505588A priority patent/CA1256423A/en
Pending legal-status Critical Current

Links

GB858508622A 1985-04-02 1985-04-02 Rotary drill bits Pending GB8508622D0 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB858508622A GB8508622D0 (en) 1985-04-02 1985-04-02 Rotary drill bits
EP86302375A EP0197741A3 (en) 1985-04-02 1986-04-01 Improvements in or relating to rotary drill bits and methods of manufacture thereof
CA000505588A CA1256423A (en) 1985-04-02 1986-04-01 Rotary drill bits and methods of manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858508622A GB8508622D0 (en) 1985-04-02 1985-04-02 Rotary drill bits

Publications (1)

Publication Number Publication Date
GB8508622D0 true GB8508622D0 (en) 1985-05-09

Family

ID=10577095

Family Applications (1)

Application Number Title Priority Date Filing Date
GB858508622A Pending GB8508622D0 (en) 1985-04-02 1985-04-02 Rotary drill bits

Country Status (3)

Country Link
EP (1) EP0197741A3 (en)
CA (1) CA1256423A (en)
GB (1) GB8508622D0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2793174B1 (en) * 1999-05-07 2001-06-29 Renault METHOD AND DEVICE FOR MOLDING A CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE
AU2001280541A1 (en) 2000-07-17 2002-01-30 Consolidated Engineering Company, Inc. Methods and apparatus for utilization of chills for castings
CN103273042B (en) * 2013-05-24 2015-04-15 成都工业学院 Method of preparing vanadium-titanium cemented-carbide drilling bit
CN108588768B (en) * 2018-05-29 2019-03-01 广州市华番盛化工科技有限公司 Steel and iron parts alkalinity deep hole nickel-plating additive, pre-plating solution and pre-plating process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4029140A (en) * 1975-04-01 1977-06-14 The British Cast Iron Research Association Method of and means for obtaining white cast iron
JPS5575874A (en) * 1978-11-30 1980-06-07 Yanmar Diesel Engine Co Ltd Production of tough cast iron casting
DE3390167T1 (en) * 1982-07-19 1984-11-29 GIW Industries, Inc., Grovetown, Ga. Abrasion-resistant white cast
US4499795A (en) * 1983-09-23 1985-02-19 Strata Bit Corporation Method of drill bit manufacture

Also Published As

Publication number Publication date
CA1256423A (en) 1989-06-27
EP0197741A3 (en) 1988-03-16
EP0197741A2 (en) 1986-10-15

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