Patent US3171552A successfully refreshed from Google Patents.
US3171552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pile driving apparatus
Assignee: Vulcan Iron Works Inc
•
Filing: 1962-11-05
•
Granted: 1965-03-02
•
Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Henry G Warrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:26
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/22; B66C1/34; E; E02; E02D; E02D7/00; E02D7/02; E02D7/06; E02D7/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US286816A
Cited
US350223A
Cited
US1306966A
Cited
US715177A
Cited
US1165098A
Cited
US1383252A
Cited
DE375255C
Cited
US2263470A
Cited
US2276990A
Cited
US2787123A
Cited
US2955576A
Cited
US2907600A
Cited
US2986421A
Cited
FR1246940A
Cited
US3104125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |