US3379017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete blocks for shore and bank protection
Assignee: Individual
•
Filing: 1966-06-13
•
Granted: 1968-04-23
•
Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Kusatake Sugiaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:47
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/14; E02D; E02D29/00; E02D29/02; E02D29/025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |