US2851135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anchor for use in earth and the like
Assignee: Individual
•
Filing: 1954-08-20
•
Granted: 1958-09-09
•
Expires: 1974-08-20
Abstract
No abstract record available.
Inventors
- 👤 Sr Clarence A Woodruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:25
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/74; E02D5/80; E02D5/805; F; F16; F16L; F16L3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US753394A
Cited
US725029A
Cited
US1153450A
Cited
US1178282A
Cited
US1244133A
Cited
US1334812A
Cited
US2243886A
Cited
US2658590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |