US2573591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil seal
Assignee: Individual
•
Filing: 1946-06-28
•
Granted: 1951-10-30
•
Expires: 1966-06-28
Abstract
No abstract record available.
Inventors
- 👤 Nelson Thomas Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:18
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/3456
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1061657A
Cited
US1538416A
Cited
US2076747A
Cited
US2080669A
Cited
US2243227A
Cited
US2224449A
Cited
US2264062A
Cited
FR877041A
Cited
US2395953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |