US2881591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mud anchor
Assignee: Individual
•
Filing: 1956-03-12
•
Granted: 1959-04-14
•
Expires: 1976-03-12
Abstract
No abstract record available.
Inventors
- 👤 Reeve John Rumsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:57
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/04; E02B17/06; B; B63; B63B; B63B21/00; B63B21/50; E02B17/02; E02B17/021; E02B2017/0056; E02B2017/0073; E02B2017/0082
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US890765A
Cited
US1066984A
Cited
US1796147A
Cited
US1982687A
Cited
US2090355A
Cited
US2334992A
Cited
US2621485A
Cited
US2603068A
Cited
US2660276A
Cited
US2672961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |