Nova Patents
RO90132A

Multiple stage cementing of well casing in subsea wells

Abstract

This record has no abstract on file.

Term

Term ended

Projected expiry passed 9 May 1992, 34.4 years ago.

  1. Priority
  2. Filed
  3. Published
  4. Projected expiry
  5. Today

14 members in 10 offices

This recordMember, by publication datePriority claim

Priority claims1

Priority claims
DocumentOfficeKindDate
68480876United States of AmericaA

Members14

Family members, oldest first
DocumentOfficeKind
US4042014AUnited States of AmericaA
DK201277ADenmarkA
NO771589LNorwayL
JPS52135802AJapanA
NL7704978ANetherlands (Kingdom of the)A
DE2721279A1GermanyA1
FR2351241A1FranceA1
GB1534656AUnited KingdomA
CA1060781ACanadaA
CA1062148ACanadaA
CA1062149ACanadaA
CA1062150ACanadaA
CA1062151ACanadaA
RO90132AThis recordRomaniaA