US3393520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container and method of building a breakwater
Assignee: Individual
•
Filing: 1965-09-07
•
Granted: 1968-07-23
•
Expires: 1985-09-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur B Butterworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:17
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/06; Y; Y02; Y02A; Y02A10/00; Y02A10/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US431524A
Cited
GB263997A
Cited
US1870154A
Cited
US2014116A
Cited
US1950070A
Cited
US2622404A
Cited
US2902743A
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US2967398A
Cited
US3054268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |