US3097695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple string tubing hanger
Assignee: Armco Inc
•
Filing: 1955-11-08
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Granted: 1963-07-16
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Expires: 1975-11-08
Abstract
No abstract record available.
Inventors
- 👤 Rouax Robert K Le
- 👤 Claude R Neilon
- 👤 Jr William W Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:53
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/047; E21B2200/00; E21B2200/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A MULTIPLE STRING TUBING WELL HEAD ASSEMBLY STRUCTURE COMPRISING A WELL HEAD BODY MEMBER HAVING A BORE AND A SEAT FROM WHICH TO SUPPORT PIPE DEPENDING IN A WELL, A CHRISTMAS TREE BODY MEMBER TO BE SUPPORTED BY SAID WELL HEAD BODY MEMBER AND HAVING A PLURALITY OF PASSAGE MEANS FOR INTERCONNECTION BETWEEN SAID CHRISTMAS TREE BODY MEMBER AND SAID WELL HEAD MEMBER, TUBING HANGER MEANS SUPPORTED FROM SAID SEAT ON SAID WELL HEAD BODY MEMBER AND ALSO HAVING PASSAGE MEANS FOR
Claim 2
Dependent Claim
82 words
A MULTIPLE STRING TUBING WELL HEAD ASSEMBLY STRUCTURE COMPRISING A WELL HEAD BODY MEMBER HAVING A BORE AND A SEAT FROM WHICH TO SUPPORT PIPE DEPENDING IN A WELL, A CHRISTMAS TREE BODY MEMBER TO BE SUPPORTED BY SAID WELL HEAD BODY MEMBER AND HAVING A PLURALITY OF PASSAGE MEANS FOR INTERCONNECTION BETWEEN SAID CHRISTMAS TREE BODY MEMBER AND SAID WELL HEAD MEMBER, TUBING HANGER MEANS SUPPORTED FROM SAID SEAT ON SAID WELL HEAD BODY MEMBER AND ALSO HAVING PASSAGE MEANS FOR
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |