Patent US3524320A successfully refreshed from Google Patents.
US3524320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of protecting areas of an earth situs against scour
Assignee: Individual
•
Filing: 1967-01-23
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Granted: 1970-08-18
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Expires: 1987-01-23
Abstract
No abstract record available.
Inventors
- 👤 Lee A Turzillo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:53
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/122; E02B3/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE560165A
Cited
USRE25614E
Cited
US983209A
Cited
US1265164A
Cited
US3254492A
Cited
US3396545A
Cited
US3396542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |