Patent US2801128A successfully refreshed from Google Patents.
US2801128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe lifting hook
Assignee: American Marietta Co
•
Filing: 1951-08-23
•
Granted: 1957-07-30
•
Expires: 1971-08-23
Abstract
No abstract record available.
Inventors
- 👤 Edward P Washabaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:04
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/22; B66C1/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2697000A
Cited
US597438A
Cited
US662342A
Cited
US1390650A
Cited
US1761037A
Cited
US1862081A
Cited
US2133557A
Cited
US2220596A
Cited
US2338998A
Cited
US2358767A
Cited
US2404602A
Cited
US2600538A
Cited
US2514307A
Cited
US2495658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |