US2884066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for applying outwardly directed forces to tubing
Assignee: Gulf Research and Development Co
•
Filing: 1954-07-26
•
Granted: 1959-04-28
•
Expires: 1974-07-26
Abstract
No abstract record available.
Inventors
- 👤 Abraham J Teplitz
- 👤 Forest F Versaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:52
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/11; E21B43/112; E21B29/00; E21B29/10; Y; Y10; Y10T; Y10T83/00; Y10T83/384; Y10T83/386
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US789867A
Cited
US1870697A
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US2034768A
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US2302567A
Cited
US2381929A
Cited
US2540122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |