US2712951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well stuffing box
Assignee: Individual
•
Filing: 1952-04-21
•
Granted: 1955-07-12
•
Expires: 1972-04-21
Abstract
No abstract record available.
Inventors
- 👤 Elzie E Legate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:48
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/24; E; E21; E21B; E21B33/00; E21B33/02; E21B33/08; F04; F04B; F04B53/00; F04B53/16; F04B53/162; F04B53/164
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE22650C
Cited
US85890A
Cited
US1565448A
Cited
US1563590A
Cited
US1787317A
Cited
US2266935A
Cited
US2493152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-11 | 1959-01-10 | 1959-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-11 | 1963-01-10 | 1963-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-11 | 1967-01-10 | 1967-07-12 | $7700.00 | Window Closed / Lapsed |