US3365894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Caisson construction
Assignee: PUERTO RICO TESTING SERVICES I
•
Filing: 1966-03-09
•
Granted: 1968-01-30
•
Expires: 1986-03-09
Abstract
No abstract record available.
Inventors
- 👤 Murati Efrahim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:06
CPC Classifications
E; E02; E02D; E02D19/00; E02D19/06; E02D19/12; E02D19/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US721830A
Cited
US768774A
Cited
US755956A
Cited
US961492A
Cited
US1017622A
Cited
US1888282A
Cited
US3292377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |