US2806535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubing support and tubing hanger
Assignee: Lane Wells Co
•
Filing: 1952-12-17
•
Granted: 1957-09-17
•
Expires: 1972-12-17
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Bender
- 👤 Ernest L Branum
- 👤 William B Buck
- 👤 Harbin T Oliphant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:44
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/10; E21B23/00; E21B23/06; E21B33/00; E21B33/10; E21B33/12; E21B33/1204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1716245A
Cited
US1902075A
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US2013112A
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US2189701A
Cited
US2194331A
Cited
US2189703A
Cited
US2358677A
Cited
US2602512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |