Patent US3250075A successfully refreshed from Google Patents.
US3250075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of retaining wall construction and anchoring
Assignee: Individual
•
Filing: 1963-09-26
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Granted: 1966-05-10
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Expires: 1983-09-26
Abstract
No abstract record available.
Inventors
- 👤 Spencer E Webb
- 👤 Joseph H Lipow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:41
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/74; E02D5/76; E02D29/00; E02D29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR321875A
Cited
US936843A
Cited
US1231426A
Cited
US1644288A
Cited
FR656692A
Cited
US1896810A
Cited
US2210218A
Cited
US2917901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |