US2743121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal construction
Assignee: Sealol Corp
•
Filing: 1952-12-06
•
Granted: 1956-04-24
•
Expires: 1972-12-06
Abstract
No abstract record available.
Inventors
- 👤 Justus B Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:34
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1598564A
Cited
US2311494A
Cited
US2322835A
Cited
US2392998A
Cited
US2382960A
Cited
US2420557A
Cited
US2558970A
Cited
US2508097A
Cited
US2447930A
Cited
US2606497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |