US2837315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic bumper jar
Assignee: HOUSTON OIL FIELD MATCRIAL COM
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Filing: 1953-02-16
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Granted: 1958-06-03
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Expires: 1973-02-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert L Burns
- 👤 Chadderdon Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:08
CPC Classifications
E; E21; E21B; E21B31/00; E21B31/107; E21B31/113
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |