US2628112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-aligned lubricating stuffing box
Assignee: Phillips Petroleum Co
•
Filing: 1949-11-14
•
Granted: 1953-02-10
•
Expires: 1969-11-14
Abstract
No abstract record available.
Inventors
- 👤 Glen G Hebard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:29
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/187; E; E21; E21B; E21B33/00; E21B33/02; E21B33/08; F16J15/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR322403A
Cited
US774270A
Cited
GB192288A
Cited
US1529874A
Cited
US1712868A
Cited
US1902360A
Cited
US2235289A
Cited
US2180880A
Cited
US2210826A
Cited
US2267183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |